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Obsolescence watch: 4310 Compressors And Vacuum Pumps
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 2026-09-28.
107 stock numbers
| NSN | Item | Risk | Why | Sources | Last award | Open |
|---|---|---|---|---|---|---|
| 4310-01-506-2531 | Nozzle Asm,I | High 75 | single approved source, and its SAM registration has expired; solicited in the last 12 months; last award Nov 2013; AMSC D on the latest solicitation: only approved sources may supply | 10 active · 1 expired · 0 unverified | Nov 2013$254.77 | 1 |
| 4310-01-616-6754 | Plate,Component Mou | High 75 | single approved source, and its SAM registration has expired; solicited in the last 12 months; last award Apr 2022; AMSC D on the latest solicitation: only approved sources may supply | 10 active · 1 expired · 0 unverified | Apr 2022$301.74 | 1 in 12 m |
| 4310-01-571-6552 | Air Cleaner,Intake | High 62 | every approved source we can verify in SAM has expired (1 of 2; 1 unverified); solicited in the last 12 months; last award Jun 2023; AMSC D on the latest solicitation: only approved sources may supply | 20 active · 1 expired · 1 unverified | Jun 2023$275.80 | 1 |
| 4310-01-578-8890 | Parts Kit,Compressor | Elevated 56 | single approved source, and its SAM registration has expired; AMSC D on the latest solicitation: only approved sources may supply | 10 active · 1 expired · 0 unverified | Jun 2026$758.96 | 1 |
| 4310-01-560-8839 | Crankshaft,Compresso | Elevated 50 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (0AT62) is due for renewal by Dec 3, 2026; solicited in the last 12 months; last award Oct 2021; AMSC R on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Oct 2021$39,170.40 | 2 |
| 4310-00-765-6039 | Ring,Piston | Elevated 50 | one active source in SAM out of 4 approved (0 expired, 3 unverified); that source's SAM registration (076M6) is due for renewal by Nov 21, 2026; solicited in the last 12 months; last award Mar 2020; AMSC L on the latest solicitation: only approved sources may supply | 41 active · 0 expired · 3 unverified | Mar 2020$14.19 | 1 |
| 4310-01-395-7387 | Filter Element,Intak | Elevated 50 | single approved source (registered in SAM); that source's SAM registration (40811) is due for renewal by Nov 12, 2026; solicited in the last 12 months; last award Feb 2011; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Feb 2011$7.87 | 1 |
| 4310-01-408-2059 | Vacuum Pump Unit,Rot | Elevated 50 | single approved source (registered in SAM); that source's SAM registration (8W867) is due for renewal by Nov 18, 2026; solicited in the last 12 months; last award Sep 2023; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Sep 2023$16,900.00 | 1 in 12 m |
| 4310-01-340-0474 | Diaphragm,Pump,Speci | Elevated 43 | single approved source (registered in SAM); that source's SAM registration (05668) is due for renewal by Dec 3, 2026; 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 |
| 4310-01-108-1271 | Cylinder Assembly,Co | Elevated 43 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (0AT62) is due for renewal by Dec 3, 2026; solicited in the last 12 months; no award in our record; AMSC R on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | none on record | 1 in 12 m |
| 4310-01-648-7405 | Compressor,Reciproc | Elevated 43 | single approved source (registered in SAM); that source's SAM registration (338X5) is due for renewal by Oct 1, 2026; 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 |
| 4310-01-727-9836 | Vacuum Pump Unit,Rec | Elevated 43 | single approved source (registered in SAM); that source's SAM registration (1PQ32) is due for renewal by Sep 5, 2026; 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 |
| 4310-00-039-5087 | Ring,Piston | Elevated 37 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; last award Oct 2017; AMSC C on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Oct 2017$2,033.00 | 1 |
| 4310-01-146-5919 | Parts Kit,Compressor | Elevated 37 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; last award May 2015; AMSC L on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | May 2015$73.71 | 1 |
| 4310-01-057-7117 | Guide And Bushing | Watch 31 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (0AT62) is due for renewal by Dec 3, 2026; AMSC C on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Jan 2024$2,195.06 | 2 |
| 4310-01-706-8557 | Vacuum Pump,Rotary | 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 | 2 |
| 4310-01-077-8542 | Ring Set,Piston | 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 R on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Nov 2025$105.00 | 1 |
| 4310-01-119-5384 | Lobe,Vacuum Pump | Watch 31 | one active source in SAM out of 2 approved (0 expired, 1 unverified); that source's SAM registration (42280) is due for renewal by Nov 4, 2026; AMSC C on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | May 2025$7,316.00 | 1 |
| 4310-01-460-6466 | Separator,Sludge,Com | Watch 31 | single approved source (registered in SAM); that source's SAM registration (57328) is due for renewal by Dec 8, 2026; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | May 2026$1,487.82 | 1 |
| 4310-01-480-1398 | Filter Element,Intak | Watch 31 | single approved source (registered in SAM); that source's SAM registration (57328) is due for renewal by Dec 8, 2026; AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | May 2026$2,727.54 | 1 |
| 4310-01-559-2037 | Diaphragm,Pump,Speci | 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 D on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | May 2026$556.01 | 1 |
| 4310-01-661-5138 | Head,Valve | Watch 31 | single approved source (registered in SAM); that source's SAM registration (57328) 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 | Jun 2025$4,221.92 | 1 |
| 4310-00-967-4820 | Ring,Piston | Watch 31 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (57140) is due for renewal by Nov 10, 2026; AMSC D on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Jun 2026$180.00 | 1 in 12 m |
| 4310-01-057-1586 | Liner,Compressor | Watch 31 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (0AT62) is due for renewal by Dec 3, 2026; AMSC C on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Apr 2024$5,138.95 | 1 in 12 m |
| 4310-01-108-1270 | Yoke,Suction,Compres | Watch 31 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (0AT62) is due for renewal by Dec 3, 2026; AMSC C on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Jul 2026$768.50 | 1 in 12 m |
| 4310-01-480-5743 | Parts Kit,Compressor | 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 |
| 4310-01-521-6774 | Tank,Pressure | Watch 31 | single approved source (registered in SAM); that source's SAM registration (96046) is due for renewal by Nov 21, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | May 2026$40,305.00 | 1 in 12 m |
| 4310-01-569-1775 | Air Cleaner,Intake | Watch 31 | single approved source (registered in SAM); that source's SAM registration (0BXF1) is due for renewal by Nov 10, 2026; AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2026$17.44 | 1 in 12 m |
| 4310-01-590-8447 | Housing,Air Compress | 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 in 12 m |
| 4310-01-640-9473 | Housing,Air Compress | Watch 31 | single approved source (registered in SAM); that source's SAM registration (57328) 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 | Aug 2026$130.00 | 1 in 12 m |
| 4310-01-660-0641 | Feed,Air Compressor | 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 |
| 4310-01-298-3235 | Plate,Locking | Watch 28 | single approved source, SAM status unverified; solicited in the last 12 months; last award Jun 1990; AMSC H on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | Jun 1990$5.48 | 1 |
| 4310-01-468-8558 | Ring Set,Piston | Watch 28 | single approved source, SAM status unverified; solicited in the last 12 months; last award Sep 2018; AMSC L on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | Sep 2018$42.00 | 1 |
| 4310-01-186-0507 | Valve,Reed | Watch 28 | single approved source, SAM status unverified; solicited in the last 12 months; last award Oct 1985; AMSC D on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | Oct 1985$43.60 | 1 in 12 m |
| 4310-01-189-3218 | Ring,Piston | Watch 28 | single approved source, SAM status unverified; solicited in the last 12 months; last award Feb 1994; AMSC H on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | Feb 1994$191.99 | 1 in 12 m |
| 4310-01-218-0045 | Valve Assembly | Watch 28 | single approved source, SAM status unverified; solicited in the last 12 months; last award Jan 2017; AMSC H on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | Jan 2017$222.73 | 1 in 12 m |
| 4310-01-458-8335 | Ring Set,Piston | Watch 28 | single approved source, SAM status unverified; solicited in the last 12 months; last award Dec 2003; AMSC H on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | Dec 2003$47.00 | 1 in 12 m |
| 4310-01-737-0726 | Cylinder Sleeve | Watch 25 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record | 11 active · 0 expired · 0 unverified | none on record | 1 |
| 4310-01-619-4229 | Compressor,Reciproca | Watch 25 | single approved source (registered in SAM); that source's SAM registration (1NWY2) is due for renewal by Sep 26, 2026 | 11 active · 0 expired · 0 unverified | Sep 2026$397.12 | 1 |
| 4310-01-727-5062 | Valve Plate,Compress | Watch 25 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record | 11 active · 0 expired · 0 unverified | none on record | 2 in 12 m |
| 4310-01-482-0202 | Rider | Watch 25 | single approved source (registered in SAM); that source's SAM registration (99517) is due for renewal by Aug 14, 2026 | 11 active · 0 expired · 0 unverified | Sep 2025$1,137.00 | 1 in 12 m |
| 4310-01-697-2671 | Cylinder Sleeve | Watch 25 | single approved source (registered in SAM); solicited in the last 12 months; no award in our record | 11 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 4310-00-571-7263 | Vacuum Pump,Rotary | Watch 23 | single approved source, SAM status unverified; solicited in the last 12 months; last award Aug 2002 | 10 active · 0 expired · 1 unverified | Aug 2002$1,200.00 | 1 |
| 4310-01-152-0937 | Air Cleaner,Intake | Watch 23 | single approved source, SAM status unverified; solicited in the last 12 months; last award Jan 2015 | 10 active · 0 expired · 1 unverified | Jan 2015$2,900.00 | 1 in 12 m |
| 4310-01-681-4757 | Ring Set,Piston | Watch 22 | single approved source, SAM status unverified; solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | none on record | 1 in 12 m |
| 4310-01-365-2647 | Cylinder,Reciprocati | Watch 18 | single approved source (registered in SAM); AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jun 2026$7,889.80 | 2 |
| 4310-01-365-2608 | Cylinder Head,Compre | Watch 18 | single approved source (registered in SAM); AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Sep 2026$22,388.24 | 1 |
| 4310-01-367-7604 | Cylinder Sleeve | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jun 2026$1,264.53 | 1 |
| 4310-01-367-7607 | Connecting Rod,Pisto | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2026$1,377.47 | 1 |
| 4310-01-680-8302 | Compressor,Reciproca | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jun 2026$27,882.21 | 1 |
| 4310-00-038-0647 | Ring,Piston | Watch 18 | single approved source (registered in SAM); AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jul 2026$442.08 | 1 |
| 4310-00-038-0648 | Ring,Piston | Watch 18 | single approved source (registered in SAM); AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Nov 2025$541.99 | 1 |
| 4310-00-060-6384 | Ring,Piston | Watch 18 | single approved source (registered in SAM); AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Nov 2025$425.00 | 1 |
| 4310-00-100-4895 | Ring,Piston | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2026$458.31 | 1 |
| 4310-00-916-2927 | Head,Assembly | Watch 18 | solicited in the last 12 months; last award Jan 2022; AMSC C on the latest solicitation: only approved sources may supply | 42 active · 0 expired · 2 unverified | Jan 2022$21,780.70 | 1 |
| 4310-01-031-8351 | Ring,Piston | Watch 18 | one active source in SAM out of 4 approved (0 expired, 3 unverified); AMSC B on the latest solicitation: only approved sources may supply | 41 active · 0 expired · 3 unverified | Jan 2025$4.14 | 1 |
| 4310-01-289-1658 | Actuator,Diaphragm | Watch 18 | solicited in the last 12 months; last award Feb 2016; AMSC L on the latest solicitation: only approved sources may supply | 32 active · 0 expired · 1 unverified | Feb 2016$8,345.96 | 1 |
| 4310-01-341-7179 | Separator,Sludge,Com | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Sep 2026$8,175.78 | 1 |
| 4310-01-365-2606 | Cylinder Head,Compre | Watch 18 | single approved source (registered in SAM); AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Mar 2025$34,689.47 | 1 |
| 4310-01-365-2610 | Cylinder Head,Compre | Watch 18 | single approved source (registered in SAM); AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Apr 2026$6,950.52 | 1 |
| 4310-01-365-2611 | Cylinder Head,Compre | Watch 18 | single approved source (registered in SAM); AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | May 2026$3,951.99 | 1 |
| 4310-01-365-2613 | Cylinder Head,Compre | Watch 18 | single approved source (registered in SAM); AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jun 2026$4,695.50 | 1 |
| 4310-01-365-2645 | Cylinder,Reciprocati | Watch 18 | single approved source (registered in SAM); AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2026$7,583.98 | 1 |
| 4310-01-367-6542 | Valve,Compressor | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2026$2,046.19 | 1 |
| 4310-01-367-7606 | Connecting Rod,Pisto | Watch 18 | single approved source (registered in SAM); AMSC L on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jan 2026$3,971.99 | 1 |
| 4310-01-368-0114 | Piston,Compressor | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2026$2,791.23 | 1 |
| 4310-01-368-0148 | Cylinder Sleeve | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | May 2026$4,282.51 | 1 |
| 4310-01-368-0149 | Cylinder Sleeve | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2026$7,275.69 | 1 |
| 4310-01-368-8356 | Wiper,Gland Assembly | Watch 18 | single approved source (registered in SAM); AMSC L on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Sep 2025$1,062.52 | 1 |
| 4310-01-374-2975 | Ring,Piston | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Feb 2026$83.36 | 1 |
| 4310-01-478-8792 | Cylinder Sleeve | Watch 18 | single approved source (registered in SAM); AMSC L on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2025$3,519.69 | 1 |
| 4310-01-509-4708 | Repair Kit,Compresso | Watch 18 | single approved source (registered in SAM); AMSC L on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2026$21,775.37 | 1 |
| 4310-01-514-6569 | Parts Kit,Compressor | Watch 18 | one active source in SAM out of 2 approved (0 expired, 1 unverified); AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Oct 2025$1,325.11 | 1 |
| 4310-01-521-0489 | Filter Element,Intak | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Sep 2026$512.52 | 1 |
| 4310-01-522-0941 | Ring,Piston | Watch 18 | single approved source (registered in SAM); AMSC H on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Feb 2026$2,919.00 | 1 |
| 4310-01-523-6643 | Filter Element,Intak | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Dec 2025$889.13 | 1 |
| 4310-01-524-1781 | Ring,Piston | Watch 18 | single approved source (registered in SAM); AMSC R on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jul 2025$4,842.99 | 1 |
| 4310-01-524-7706 | Compressor Unit,Reci | Watch 18 | single approved source (registered in SAM); AMSC H on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2026$22,724.51 | 1 |
| 4310-01-535-7329 | Repair Kit,Compresso | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2026$1,488.35 | 1 |
| 4310-01-550-8503 | Filter Element,Intak | Watch 18 | one active source in SAM out of 2 approved (0 expired, 1 unverified); AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | May 2026$425.65 | 1 |
| 4310-01-552-9871 | Compressor,Reciproca | Watch 18 | one active source in SAM out of 2 approved (0 expired, 1 unverified); AMSC B on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Aug 2024$2,907.92 | 1 |
| 4310-01-562-8604 | Ring,Piston | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | May 2024$120.10 | 1 |
| 4310-01-584-3027 | Grille,Rear,Hood | Watch 18 | one active source in SAM out of 2 approved (1 expired, 0 unverified); AMSC D on the latest solicitation: only approved sources may supply | 21 active · 1 expired · 0 unverified | Sep 2026$2,429.00 | 1 |
| 4310-01-606-7614 | Breather | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Apr 2024$501.70 | 1 |
| 4310-01-621-6460 | Air Cleaner,Intake | Watch 18 | single approved source (registered in SAM); AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jul 2025$107.82 | 1 |
| 4310-01-629-4433 | Compressor Unit,Rota | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jun 2026$5,994.00 | 1 |
| 4310-01-669-8023 | Air Cleaner,Intake | Watch 18 | one active source in SAM out of 2 approved (0 expired, 1 unverified); AMSC D on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Apr 2026$699.15 | 1 |
| 4310-01-709-2161 | Vacuum Pump,Rotary | Watch 18 | one active source in SAM out of 2 approved (0 expired, 1 unverified); AMSC B on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Feb 2025$19,875.00 | 1 |
| 4310-01-725-0284 | Compressor Unit,Cent | Watch 18 | single approved source, SAM status unverified; solicited in the last 12 months; no award in our record | 10 active · 0 expired · 1 unverified | none on record | 1 |
| 4310-01-023-2807 | Cylinder Sleeve | Watch 18 | solicited in the last 12 months; last award Apr 2021; AMSC D on the latest solicitation: only approved sources may supply | 32 active · 0 expired · 1 unverified | Apr 2021$1,500.00 | 1 in 12 m |
| 4310-01-052-2461 | Filter Element,Inta | Watch 18 | solicited in the last 12 months; last award Jan 2011; AMSC R on the latest solicitation: only approved sources may supply | 43 active · 0 expired · 1 unverified | Jan 2011$223.32 | 1 in 12 m |
| 4310-01-248-1570 | Piston,Compressor | Watch 18 | solicited in the last 12 months; last award Apr 2022; AMSC C on the latest solicitation: only approved sources may supply | 42 active · 0 expired · 2 unverified | Apr 2022$14,437.40 | 1 in 12 m |
| 4310-01-274-5060 | Tank,Pressure | Watch 18 | one active source in SAM out of 3 approved (0 expired, 2 unverified); AMSC R on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Dec 2023$14,055.00 | 1 in 12 m |
| 4310-01-368-7689 | Piston,Compressor | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Sep 2025$3,373.29 | 1 in 12 m |
| 4310-01-428-9722 | Plate,Valve Stop | Watch 18 | solicited in the last 12 months; last award Jan 2019; AMSC D on the latest solicitation: only approved sources may supply | 42 active · 0 expired · 2 unverified | Jan 2019$564.84 | 1 in 12 m |
| 4310-01-469-6557 | Plate,Valve Stop | Watch 18 | single approved source (registered in SAM); AMSC C on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Jun 2026$65.84 | 1 in 12 m |
| 4310-01-477-9189 | Piston And Rod Assy | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2026$6,846.53 | 1 in 12 m |
| 4310-01-477-9235 | Cylinder Sleeve | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Feb 2026$1,313.99 | 1 in 12 m |
| 4310-01-526-6568 | Unloader,Magnetic | Watch 18 | solicited in the last 12 months; last award Jan 2023; AMSC R on the latest solicitation: only approved sources may supply | 32 active · 0 expired · 1 unverified | Jan 2023$19,616.00 | 1 in 12 m |
| 4310-01-584-3001 | Gauge Oil Pressure, | Watch 18 | one active source in SAM out of 3 approved (2 expired, 0 unverified); AMSC P on the latest solicitation: only approved sources may supply | 31 active · 2 expired · 0 unverified | Aug 2026$119.00 | 1 in 12 m |
| 4310-01-667-4303 | Air Cleaner,Intake | Watch 18 | single approved source (registered in SAM); AMSC D on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Sep 2026$386.90 | 1 in 12 m |
| 4310-01-737-8061 | Plate,Valve Stop | Watch 18 | one active source in SAM out of 2 approved (0 expired, 1 unverified); AMSC C on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | Sep 2026$1,192.74 | 1 in 12 m |
| 4310-01-679-2354 | Filter Element,Intak | Watch 15 | one active source in SAM out of 3 approved (0 expired, 2 unverified) | 31 active · 0 expired · 2 unverified | Aug 2026$177.31 | 1 |
| 4310-01-692-9279 | Modification Kit,Pum | Watch 15 | single approved source (registered in SAM) | 11 active · 0 expired · 0 unverified | Aug 2026$14,649.23 | 1 |
| 4310-00-712-3203 | Air Cleaner,Intake | Watch 15 | solicited in the last 12 months; last award Jan 2013 | 40 active · 0 expired · 4 unverified | Jan 2013$179.30 | 1 in 12 m |
| 4310-01-247-7126 | Cylinder Sleeve | Watch 15 | solicited in the last 12 months; last award Feb 2013 | 32 active · 0 expired · 1 unverified | Feb 2013$149.23 | 1 in 12 m |
| 4310-01-498-4806 | Filter Element,Inta | Watch 15 | solicited in the last 12 months; last award May 2023 | 32 active · 0 expired · 1 unverified | May 2023$14,945.75 | 1 in 12 m |
Have one of these on the shelf, or can you make it? List it free and the solicitation lands on your dashboard the morning it posts. Buyers: every NSN page shows the same read with the full source list.