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Obsolescence watch: 5310 Nuts And Washers
Stock numbers the government still buys whose supply base is thinning. Each one carries the reasons in plain words: the government's own terminal codes, approved sources whose SAM registration has expired, a single source, a registration about to lapse, years of solicitations without an award. A source we cannot verify in SAM is shown as unverified, never counted as gone. Rebuilt nightly; this list is from 2026-09-29.
150 stock numbers at watch risk
| NSN | Item | Risk | Why | Sources | Last award | Open |
|---|---|---|---|---|---|---|
| 5310-01-297-1256 | Nut,Plain,Barrel | Watch 31 | one active source in SAM out of 2 approved (1 expired, 0 unverified); that source's SAM registration (81205) is due for renewal by Nov 11, 2026; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 1 expired · 0 unverified | Aug 2026$10,100.00 | 1 |
| 5310-01-379-9637 | Nut,Self-Locking,Hex | Watch 31 | single approved source (registered in SAM); that source's SAM registration (83130) is due for renewal by Dec 8, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Nov 2025$3,345.63 | 1 |
| 5310-01-388-2318 | Nut,Plain,Hexagon | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5310-00-382-8085 | Nut,Plain,Round | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (70236) is due for renewal by Dec 9, 2026; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Nov 2025$915.00 | 1 |
| 5310-00-949-6280 | Nut,L0ck | Watch 31 | one active source in SAM out of 4 approved (0 expired, 3 unverified); that source's SAM registration (78500) is due for renewal by Sep 30, 2026; AMSC D on the latest solicitation: only approved sources may supply | 41 active · 0 expired · 3 unverified | Aug 2024$6.82 | 1 |
| 5310-01-008-6776 | Nut,Plain,Blind Rive | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (25472) is due for renewal by Aug 12, 2026; AMSC R on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Mar 2026$1,780.00 | 1 |
| 5310-01-128-6499 | Washer,Flat | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (99657) is due for renewal by Oct 21, 2026; AMSC R on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Jul 2025$62.50 | 1 |
| 5310-01-130-7920 | Washer | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (71871) is due for renewal by Oct 15, 2026; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Aug 2026$36.21 | 1 |
| 5310-01-172-8787 | Nut,Self-Locking,Pla | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (99551) is due for renewal by Aug 15, 2026; AMSC L on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Jul 2026$11.49 | 1 |
| 5310-01-179-4266 | Washer,Keyway | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (8V613) is due for renewal by Nov 12, 2026; AMSC P on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Aug 2026$21.00 | 1 |
| 5310-01-185-8598 | Washer,Flat | Watch 31 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (71871) is due for renewal by Oct 15, 2026; AMSC R on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Aug 2026$188.29 | 1 |
| 5310-01-376-0769 | Nut,Plain,Hexagon | Watch 31 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (8FGX3) is due for renewal by Nov 26, 2026; AMSC D on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | May 2026$453.00 | 1 |
| 5310-01-445-6396 | Washer,Flat | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | none on record | 1 |
| 5310-01-543-2945 | Nut,Self-Locking,Hex | Watch 31 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (0JKF0) is due for renewal by Dec 9, 2026; AMSC D on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Jan 2026$7.65 | 1 |
| 5310-01-559-2449 | Washer,Flat | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; no award in our record; AMSC R on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | none on record | 1 |
| 5310-01-560-5584 | Washer,Lock | Watch 31 | single approved source (registered in SAM); that source's SAM registration (39428) is due for renewal by Sep 11, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Nov 2023$10.00 | 1 |
| 5310-01-571-5350 | Washer,Flat | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5310-01-584-0658 | Washer,Flat | Watch 31 | single approved source (registered in SAM); that source's SAM registration (51506) is due for renewal by Sep 26, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jun 2024$842.25 | 1 |
| 5310-01-589-4960 | Washer,Flat | Watch 31 | one active source in SAM out of 2 approved (1 expired, 0 unverified); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 1 expired · 0 unverified | none on record | 1 |
| 5310-01-589-6053 | Nut,Plain,Hexagon | Watch 31 | single approved source (registered in SAM); that source's SAM registration (39428) is due for renewal by Sep 11, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Mar 2025$0.19 | 1 |
| 5310-01-595-9579 | Nut,Self-Locking,Hex | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5310-01-616-4630 | Washer,Flat | Watch 31 | single approved source (registered in SAM); that source's SAM registration (1NWY2) is due for renewal by Sep 26, 2026; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Apr 2025$33.06 | 1 |
| 5310-01-644-0683 | Nut,Plain,Clinch | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (46384) is due for renewal by Oct 22, 2026; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Mar 2025$0.43 | 1 |
| 5310-01-644-7801 | Nut,Plain,Wing | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | none on record | 1 |
| 5310-01-645-3662 | Washer,Lock | Watch 31 | single approved source (registered in SAM); that source's SAM registration (39428) is due for renewal by Sep 11, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Mar 2026$0.99 | 1 |
| 5310-01-653-3797 | Washer,Seal | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5310-01-662-9788 | Washer Cres A34 | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5310-01-665-5751 | Nut Spacer,Plate | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5310-01-665-6150 | Washer | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5310-01-667-3894 | Washer,Key | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5310-01-688-2160 | Nut,Plain,Hexagon | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5310-01-690-3758 | Washer,Flat | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5310-01-700-6598 | Washer,Recessed | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC P on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5310-01-727-4766 | Washer,Split | Watch 31 | single approved source (registered in SAM); that source's SAM registration (51506) is due for renewal by Sep 26, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jul 2026$34.00 | 1 |
| 5310-01-728-1032 | Nut,Self-Locking,He | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5310-01-735-7085 | Nut,Self-Locking,Ext | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 5310-12-142-8173 | Washer,Spring Tensio | Watch 31 | no approved source on file in FLIS; solicited in the last 12 months; last award Oct 2013; AMSC D on the latest solicitation: only approved sources may supply | 00 active · 0 expired · 0 unverified | Oct 2013$0.04 | 1 |
| 5310-99-747-1042 | Washer,Flat | Watch 31 | no approved source on file in FLIS; solicited in the last 12 months; last award Aug 2014; AMSC C on the latest solicitation: only approved sources may supply | 00 active · 0 expired · 0 unverified | Aug 2014$1.69 | 1 |
| 5310-01-482-9432 | Washer,Flat | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 2 in 12 m |
| 5310-01-516-9288 | Washer,Flat | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (99657) is due for renewal by Oct 21, 2026; AMSC C on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Mar 2026$44.78 | 2 in 12 m |
| 5310-01-627-2238 | Washer,Spring Tensio | Watch 31 | one active source in SAM out of 2 approved (1 expired, 0 unverified); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 1 expired · 0 unverified | none on record | 2 in 12 m |
| 5310-00-057-3962 | Washer,Spring Tensi | Watch 31 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (3GET4) is due for renewal by Nov 25, 2026; AMSC R on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Jan 2026$7.49 | 1 in 12 m |
| 5310-00-550-3895 | Nut,Plain,Blind Rive | Watch 31 | single approved source (registered in SAM); that source's SAM registration (25472) is due for renewal by Aug 12, 2026; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Apr 2024$8.00 | 1 in 12 m |
| 5310-00-579-2164 | Nut,Self-Locking,Bar | Watch 31 | single approved source (registered in SAM); that source's SAM registration (97393) is due for renewal by Sep 17, 2026; AMSC P on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jan 2024$90.28 | 1 in 12 m |
| 5310-01-047-1025 | Nut,Self-Locking,Bar | Watch 31 | single approved source (registered in SAM); that source's SAM registration (97393) is due for renewal by Sep 17, 2026; AMSC L on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Dec 2025$45.50 | 1 in 12 m |
| 5310-01-151-4138 | Washer,Spring Tensio | Watch 31 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (54ZA4) is due for renewal by Nov 25, 2026; AMSC D on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Feb 2024$14.31 | 1 in 12 m |
| 5310-01-159-1036 | Nut | Watch 31 | single approved source (registered in SAM); that source's SAM registration (10941) is due for renewal by Sep 23, 2026; AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jun 2026$90.00 | 1 in 12 m |
| 5310-01-159-1042 | Nut,Extension Screw | Watch 31 | single approved source (registered in SAM); that source's SAM registration (00994) is due for renewal by Aug 11, 2026; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | May 2026$1,798.62 | 1 in 12 m |
| 5310-01-179-0834 | Nut,Self-Locking,Pla | Watch 31 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (8V613) is due for renewal by Nov 12, 2026; AMSC P on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Jul 2025$10.30 | 1 in 12 m |
| 5310-01-217-1923 | Nut,Plain,Plate | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC L on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-01-251-6374 | Washer,Shouldered An | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (8V613) is due for renewal by Nov 12, 2026; AMSC P on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Jun 2026$190.45 | 1 in 12 m |
| 5310-01-315-2804 | Non-Nsn Team | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC H on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-01-322-3540 | Washer,Flat | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-01-357-3934 | Nut,Plain,Hexagon | Watch 31 | single approved source (registered in SAM); that source's SAM registration (39428) is due for renewal by Sep 11, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Mar 2026$0.14 | 1 in 12 m |
| 5310-01-397-5960 | Nut,Plain,Hexagon | Watch 31 | single approved source (registered in SAM); that source's SAM registration (83130) is due for renewal by Dec 8, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | May 2024$41.28 | 1 in 12 m |
| 5310-01-413-3726 | Nut,Plain,Octagon | Watch 31 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | none on record | 1 in 12 m |
| 5310-01-415-0233 | Washer,Flat | Watch 31 | single approved source (registered in SAM); that source's SAM registration (11083) is due for renewal by Sep 5, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2026$4.00 | 1 in 12 m |
| 5310-01-415-5326 | Nut,Self-Locking,Hex | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (15187) is due for renewal by Oct 14, 2026; AMSC P on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Jun 2026$480.00 | 1 in 12 m |
| 5310-01-420-1356 | Nut,Plain,Hexagon | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (83130) is due for renewal by Dec 8, 2026; AMSC C on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Jun 2026$35.42 | 1 in 12 m |
| 5310-01-430-9549 | Washer,Lock | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; no award in our record; AMSC R on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | none on record | 1 in 12 m |
| 5310-01-447-6251 | Washer,Recessed | Watch 31 | single approved source (registered in SAM); that source's SAM registration (97499) is due for renewal by Nov 14, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2026$43.00 | 1 in 12 m |
| 5310-01-461-7949 | Nut,Plain,Hexagon | Watch 31 | single approved source (registered in SAM); that source's SAM registration (10941) is due for renewal by Sep 23, 2026; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jan 2026$130.00 | 1 in 12 m |
| 5310-01-465-4853 | Washer,Flat | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-01-477-3214 | Washer,Lock | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; no award in our record; AMSC C on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | none on record | 1 in 12 m |
| 5310-01-482-9259 | Washer,Flat | Watch 31 | single approved source (registered in SAM); that source's SAM registration (39428) is due for renewal by Sep 11, 2026; AMSC L on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | May 2025$1.25 | 1 in 12 m |
| 5310-01-495-5743 | Washer,Flat | Watch 31 | single approved source (registered in SAM); that source's SAM registration (85213) is due for renewal by Nov 5, 2026; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Apr 2025$1.31 | 1 in 12 m |
| 5310-01-499-8139 | Washer,Flat | Watch 31 | one active source in SAM out of 4 approved (0 expired, 3 unverified); that source's SAM registration (39428) is due for renewal by Sep 11, 2026; AMSC D on the latest solicitation: only approved sources may supply | 41 active · 0 expired · 3 unverified | Aug 2026$12.00 | 1 in 12 m |
| 5310-01-503-7028 | Washer Rebound | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (1YHH8) is due for renewal by Sep 29, 2026; AMSC R on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | May 2026$3.79 | 1 in 12 m |
| 5310-01-504-0773 | Nut,Plain,Hexagon | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (1F103) is due for renewal by Oct 29, 2026; AMSC C on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Dec 2025$2.50 | 1 in 12 m |
| 5310-01-505-0271 | Nut,Plain,Extended W | Watch 31 | one active source in SAM out of 4 approved (0 expired, 3 unverified); that source's SAM registration (39428) is due for renewal by Sep 11, 2026; AMSC C on the latest solicitation: only approved sources may supply | 41 active · 0 expired · 3 unverified | Aug 2026$0.45 | 1 in 12 m |
| 5310-01-507-4395 | Washer Blank | Watch 31 | single approved source (registered in SAM); that source's SAM registration (5X475) is due for renewal by Sep 29, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Nov 2025$14.97 | 1 in 12 m |
| 5310-01-519-1126 | Nut,Plain,Extended W | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (1YHH8) is due for renewal by Sep 29, 2026; AMSC R on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Jun 2026$21.02 | 1 in 12 m |
| 5310-01-521-2205 | Nut,Self-Locking,He | Watch 31 | single approved source (registered in SAM); that source's SAM registration (34914) is due for renewal by Dec 5, 2026; AMSC L on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jun 2026$18.99 | 1 in 12 m |
| 5310-01-526-8398 | Nut,Plain,Wing | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-01-534-7024 | Washer,Flat | Watch 31 | single approved source (registered in SAM); that source's SAM registration (10941) is due for renewal by Sep 23, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Mar 2025$208.00 | 1 in 12 m |
| 5310-01-535-1654 | Nut,Clip-On | Watch 31 | single approved source (registered in SAM); that source's SAM registration (51439) is due for renewal by Oct 15, 2026; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Apr 2026$50.00 | 1 in 12 m |
| 5310-01-538-6647 | Washer,Key | Watch 31 | single approved source (registered in SAM); that source's SAM registration (1T765) is due for renewal by Dec 16, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Oct 2025$87.62 | 1 in 12 m |
| 5310-01-549-4682 | Nut Assembly,Retaine | Watch 31 | single approved source (registered in SAM); that source's SAM registration (51439) is due for renewal by Oct 15, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Nov 2025$24.00 | 1 in 12 m |
| 5310-01-565-2660 | Nut,Self-Locking,Dou | Watch 31 | single approved source (registered in SAM); that source's SAM registration (89305) is due for renewal by Nov 26, 2026; AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Apr 2026$29.00 | 1 in 12 m |
| 5310-01-568-0750 | Washer,Spring Tensio | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (46UR5) is due for renewal by Nov 25, 2026; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Nov 2025$130.57 | 1 in 12 m |
| 5310-01-576-8217 | Nut,Plain,Blind Rive | Watch 31 | AAC X: semi-active, no procurement planned; AMSC D on the latest solicitation: only approved sources may supply | 22 active · 0 expired · 0 unverified | Aug 2026$28.00 | 1 in 12 m |
| 5310-01-595-9361 | Washer,Flat | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (2B524) is due for renewal by Sep 16, 2026; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Mar 2026$24.65 | 1 in 12 m |
| 5310-01-596-4737 | Washer,Slotted | Watch 31 | single approved source (registered in SAM); that source's SAM registration (30941) is due for renewal by Dec 12, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Mar 2025$586.81 | 1 in 12 m |
| 5310-01-597-5967 | Nut,Self-Locking,Hex | Watch 31 | single approved source (registered in SAM); that source's SAM registration (0Y3H3) is due for renewal by Nov 4, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jun 2026$75.52 | 1 in 12 m |
| 5310-01-597-6117 | Washer,Flat | Watch 31 | single approved source (registered in SAM); that source's SAM registration (0Y3H3) is due for renewal by Nov 4, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Dec 2025$4.20 | 1 in 12 m |
| 5310-01-597-6298 | Washer,Lock | Watch 31 | single approved source (registered in SAM); that source's SAM registration (0Y3H3) is due for renewal by Nov 4, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2026$1.75 | 1 in 12 m |
| 5310-01-600-2333 | Nut Assembly,Retain | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-01-605-9646 | Washer,Flat | Watch 31 | single approved source (registered in SAM); that source's SAM registration (0JKF0) is due for renewal by Dec 9, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Sep 2026$54.15 | 1 in 12 m |
| 5310-01-610-4322 | Washer,Flat | Watch 31 | single approved source (registered in SAM); that source's SAM registration (2X262) is due for renewal by Nov 11, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jul 2026$199.54 | 1 in 12 m |
| 5310-01-615-2647 | Washer,Flat | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (5X475) is due for renewal by Sep 29, 2026; AMSC L on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Nov 2025$21.60 | 1 in 12 m |
| 5310-01-615-2656 | Washer,Lock | Watch 31 | single approved source (registered in SAM); that source's SAM registration (39428) is due for renewal by Sep 11, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | May 2026$0.11 | 1 in 12 m |
| 5310-01-618-5815 | Nut Assembly,Self-L | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-01-618-7510 | Washer,Flat | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (3ECH2) is due for renewal by Aug 27, 2026; AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Aug 2025$16.20 | 1 in 12 m |
| 5310-01-620-0317 | Washer,Lock | Watch 31 | one active source in SAM out of 3 approved (1 expired, 1 unverified); that source's SAM registration (8FGX3) is due for renewal by Nov 26, 2026; AMSC D on the latest solicitation: only approved sources may supply | 31 active · 1 expired · 1 unverified | Sep 2026$522.75 | 1 in 12 m |
| 5310-01-620-0321 | Washer,Lock | Watch 31 | one active source in SAM out of 3 approved (1 expired, 1 unverified); that source's SAM registration (8FGX3) is due for renewal by Nov 26, 2026; AMSC D on the latest solicitation: only approved sources may supply | 31 active · 1 expired · 1 unverified | Sep 2026$2,978.72 | 1 in 12 m |
| 5310-01-620-9297 | Nut,Self-Locking,He | Watch 31 | single approved source (registered in SAM); that source's SAM registration (52793) is due for renewal by Oct 23, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Dec 2024$150.00 | 1 in 12 m |
| 5310-01-626-9749 | Washer,Shouldered An | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC H on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-01-627-2634 | Nut,Plain,Hexagon | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-01-628-4906 | Nut,Plain,Castellat | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-01-644-7675 | Nut,Plain,Wing | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-01-657-0238 | Nut,Plain,Extended W | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (7AYE6) is due for renewal by Nov 19, 2026; AMSC C on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | May 2026$55.73 | 1 in 12 m |
| 5310-01-658-7688 | Nut,Plain,Hexagon | Watch 31 | single approved source (registered in SAM); that source's SAM registration (7AYE6) is due for renewal by Nov 19, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jul 2026$150.74 | 1 in 12 m |
| 5310-01-663-9214 | Nut,Shaft,Rotary | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-01-675-5193 | Nut,Self-Locking,Pla | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-01-679-8234 | Washer,Flat | Watch 31 | single approved source (registered in SAM); that source's SAM registration (81205) is due for renewal by Nov 11, 2026; AMSC P on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jul 2026$1,725.75 | 1 in 12 m |
| 5310-01-680-3226 | Nut,Plain,Hexagon | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-01-690-7667 | Washer,Flat | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; no award in our record; AMSC B on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | none on record | 1 in 12 m |
| 5310-01-691-8721 | Washer,Flat | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-01-693-6054 | Nut,Plain,Hexagon | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; no award in our record; AMSC L on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | none on record | 1 in 12 m |
| 5310-01-694-9017 | Nut,Plain,Assembled | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-01-694-9681 | Washer,Lock | Watch 31 | single approved source (registered in SAM); that source's SAM registration (07382) is due for renewal by Nov 6, 2026; AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jun 2026$22.34 | 1 in 12 m |
| 5310-01-706-8625 | Washer,Seal | Watch 31 | single approved source (registered in SAM); that source's SAM registration (1NPE1) is due for renewal by Oct 7, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Mar 2026$16.00 | 1 in 12 m |
| 5310-01-706-9114 | Nut,Self-Locking,Ext | Watch 31 | single approved source (registered in SAM); that source's SAM registration (3FP69) is due for renewal by Nov 5, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | May 2025$11.53 | 1 in 12 m |
| 5310-01-716-2082 | Nut,Self-Locking,Ext | Watch 31 | single approved source (registered in SAM); that source's SAM registration (55719) is due for renewal by Dec 19, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Sep 2025$20.41 | 1 in 12 m |
| 5310-01-737-9733 | Nut,Plain,Slotted,He | Watch 31 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 5310-99-122-6477 | Washer,Flat | Watch 31 | no approved source on file in FLIS; solicited in the last 12 months; last award Jul 2018; AMSC R on the latest solicitation: only approved sources may supply | 00 active · 0 expired · 0 unverified | Jul 2018$4.85 | 1 in 12 m |
| 5310-99-440-5920 | Nut,Self-Locking,Hex | Watch 31 | no approved source on file in FLIS; solicited in the last 12 months; last award Sep 2022; AMSC R on the latest solicitation: only approved sources may supply | 00 active · 0 expired · 0 unverified | Sep 2022$299.00 | 1 in 12 m |
| 5310-99-454-0386 | Nut,Plain,Round | Watch 31 | no approved source on file in FLIS; solicited in the last 12 months; last award Dec 2018; AMSC C on the latest solicitation: only approved sources may supply | 00 active · 0 expired · 0 unverified | Dec 2018$21.14 | 1 in 12 m |
| 5310-00-493-4677 | Nut Assembly,Self-Lo | Watch 30 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Aug 2002 | 21 active · 0 expired · 1 unverified | Aug 2002$150.00 | 1 |
| 5310-01-018-6496 | Washer,Lock | Watch 30 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; last award Aug 2018 | 31 active · 0 expired · 2 unverified | Aug 2018$1.47 | 1 |
| 5310-01-136-6063 | Washer,Spring | Watch 30 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Nov 2022 | 21 active · 0 expired · 1 unverified | Nov 2022$305.51 | 1 |
| 5310-01-208-6739 | Washer,Flat | Watch 30 | single approved source (registered in SAM); solicited in the last 12 months; last award Jul 2019 | 11 active · 0 expired · 0 unverified | Jul 2019$2.12 | 1 |
| 5310-01-314-0895 | Nut,Plain,Round | Watch 30 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; last award Sep 2020 | 31 active · 0 expired · 2 unverified | Sep 2020$16.89 | 1 |
| 5310-01-358-0597 | Washer,Flat | Watch 30 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Mar 1999 | 21 active · 0 expired · 1 unverified | Mar 1999$7.60 | 1 |
| 5310-01-615-1267 | Nut,Self-Locking,He | Watch 30 | single approved source (registered in SAM); solicited in the last 12 months; last award Jul 2022 | 11 active · 0 expired · 0 unverified | Jul 2022$3.25 | 1 |
| 5310-01-621-9785 | Nut,Plain,Hexagon | Watch 30 | one active source in SAM out of 4 approved (0 expired, 3 unverified); solicited in the last 12 months; last award Sep 2017 | 41 active · 0 expired · 3 unverified | Sep 2017$0.12 | 1 |
| 5310-01-648-2453 | Washer,Flat | Watch 30 | single approved source (registered in SAM); solicited in the last 12 months; last award Mar 2022 | 11 active · 0 expired · 0 unverified | Mar 2022$3.85 | 1 |
| 5310-01-693-1405 | Nut,Self-Locking,Hex | Watch 30 | single approved source (registered in SAM); solicited in the last 12 months; last award Aug 2023 | 11 active · 0 expired · 0 unverified | Aug 2023$238.05 | 1 |
| 5310-00-680-7848 | Washer,Flat | Watch 30 | single approved source (registered in SAM); solicited in the last 12 months; last award Feb 2018 | 11 active · 0 expired · 0 unverified | Feb 2018$21.43 | 3 in 12 m |
| 5310-00-068-0221 | Nut,Plain,Blind Riv | Watch 30 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; last award Jul 2022 | 31 active · 0 expired · 2 unverified | Jul 2022$2.10 | 1 in 12 m |
| 5310-00-115-0639 | Nut,Sleeve | Watch 30 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; last award Apr 2019 | 31 active · 0 expired · 2 unverified | Apr 2019$50.00 | 1 in 12 m |
| 5310-00-268-6068 | Nut,Plain,Hexagon | Watch 30 | one active source in SAM out of 6 approved (0 expired, 5 unverified); solicited in the last 12 months; last award Sep 2021 | 61 active · 0 expired · 5 unverified | Sep 2021$0.74 | 1 in 12 m |
| 5310-00-393-6475 | Washer,Key | Watch 30 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Aug 2019 | 21 active · 0 expired · 1 unverified | Aug 2019$152.40 | 1 in 12 m |
| 5310-00-404-5071 | Washer,Flat | Watch 30 | single approved source (registered in SAM); solicited in the last 12 months; last award Aug 2010 | 11 active · 0 expired · 0 unverified | Aug 2010$4.37 | 1 in 12 m |
| 5310-00-498-3198 | Washer,Key | Watch 30 | single approved source (registered in SAM); solicited in the last 12 months; last award Mar 2023 | 11 active · 0 expired · 0 unverified | Mar 2023$121.10 | 1 in 12 m |
| 5310-00-637-3629 | Nut,Plain,Hexagon | Watch 30 | one active source in SAM out of 4 approved (0 expired, 3 unverified); solicited in the last 12 months; last award Jun 2017 | 41 active · 0 expired · 3 unverified | Jun 2017$3.07 | 1 in 12 m |
| 5310-00-864-5982 | Nut,Plain,Hexagon | Watch 30 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award May 1969 | 21 active · 0 expired · 1 unverified | May 1969$0.25 | 1 in 12 m |
| 5310-00-948-9719 | Nut Assembly,Self-Lo | Watch 30 | one active source in SAM out of 5 approved (0 expired, 4 unverified); solicited in the last 12 months; last award Apr 2005 | 51 active · 0 expired · 4 unverified | Apr 2005$55.00 | 1 in 12 m |
| 5310-01-103-6040 | Nut,Plain,Hexagon | Watch 30 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Apr 2016 | 21 active · 0 expired · 1 unverified | Apr 2016$4.27 | 1 in 12 m |
| 5310-01-149-9566 | Nut | Watch 30 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Oct 2007 | 21 active · 0 expired · 1 unverified | Oct 2007$39.80 | 1 in 12 m |
| 5310-01-237-9383 | Washer,Flat | Watch 30 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Jan 2022 | 21 active · 0 expired · 1 unverified | Jan 2022$8.25 | 1 in 12 m |
| 5310-01-260-3074 | Washer | Watch 30 | single approved source (registered in SAM); solicited in the last 12 months; last award Oct 2017 | 11 active · 0 expired · 0 unverified | Oct 2017$7.50 | 1 in 12 m |
| 5310-01-284-8018 | Washer,Flat | Watch 30 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Oct 2019 | 21 active · 0 expired · 1 unverified | Oct 2019$0.27 | 1 in 12 m |
| 5310-01-303-5327 | Nut,Plain,Hexagon | Watch 30 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Jun 2019 | 21 active · 0 expired · 1 unverified | Jun 2019$443.69 | 1 in 12 m |
| 5310-01-383-8765 | Washer,Flat | Watch 30 | single approved source (registered in SAM); solicited in the last 12 months; last award Jun 2010 | 11 active · 0 expired · 0 unverified | Jun 2010$2.17 | 1 in 12 m |
| 5310-01-387-9886 | Washer,Flat | Watch 30 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; last award Aug 2017 | 31 active · 0 expired · 2 unverified | Aug 2017$0.18 | 1 in 12 m |
| 5310-01-567-4892 | Washer,Spring Tensi | Watch 30 | single approved source (registered in SAM); solicited in the last 12 months; last award Jul 2023 | 11 active · 0 expired · 0 unverified | Jul 2023$41.44 | 1 in 12 m |
| 5310-01-653-6547 | Nut,Plain,Hexagon | Watch 30 | one active source in SAM out of 5 approved (0 expired, 4 unverified); solicited in the last 12 months; last award Oct 2020 | 51 active · 0 expired · 4 unverified | Oct 2020$0.47 | 1 in 12 m |
| 5310-01-670-4049 | Washer,Flat | Watch 30 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award Aug 2022 | 21 active · 0 expired · 1 unverified | Aug 2022$51.63 | 1 in 12 m |
| 5310-01-687-5624 | Washer,Key | Watch 30 | single approved source (registered in SAM); solicited in the last 12 months; last award Jun 2023 | 11 active · 0 expired · 0 unverified | Jun 2023$3,500.00 | 1 in 12 m |
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