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Obsolescence watch
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.
21 stock numbers at watch risk
| NSN | Item | Risk | Why | Sources | Last award | Open |
|---|---|---|---|---|---|---|
| 6635-01-737-5674 | Camera,Infrared,Indu | 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 |
| 6635-01-124-1582 | Tester,Torque Wrench | Watch 31 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (87641) is due for renewal by Dec 5, 2026; AMSC P on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Nov 2023$8,762.01 | 1 in 12 m |
| 6635-01-503-0094 | Probe,Eddy Current | Watch 31 | single approved source (registered in SAM); that source's SAM registration (97499) is due for renewal by Nov 14, 2026; AMSC B on the latest solicitation: only approved sources may supply | 11 active · 0 expired · 0 unverified | Aug 2025$221.00 | 1 in 12 m |
| 6635-01-633-8964 | Light,Ultraviolet,Me | Watch 31 | one active source in SAM out of 3 approved (0 expired, 2 unverified); that source's SAM registration (20772) is due for renewal by Aug 28, 2026; AMSC D on the latest solicitation: only approved sources may supply | 31 active · 0 expired · 2 unverified | Oct 2025$650.00 | 1 in 12 m |
| 6635-41-002-7314 | Tensiometer | Watch 31 | no approved source on file in FLIS; solicited in the last 12 months; last award Feb 2021; AMSC D on the latest solicitation: only approved sources may supply | 00 active · 0 expired · 0 unverified | Feb 2021$969.97 | 1 in 12 m |
| 6635-00-918-5033 | Tester,Spring Resili | Watch 28 | single approved source, SAM status unverified; solicited in the last 12 months; last award Nov 2007; AMSC D on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | Nov 2007$37.94 | 1 in 12 m |
| 6635-01-737-5672 | Camera,Infrared,Indu | 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 |
| 6635-01-421-1465 | Tensiometer | Watch 25 | single approved source (registered in SAM); that source's SAM registration (39428) is due for renewal by Sep 11, 2026 | 11 active · 0 expired · 0 unverified | Jun 2025$49.00 | 1 in 12 m |
| 6635-01-682-2849 | X-Ray Apparatus,Radi | 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 | Jan 2026$6,568.00 | 2 in 12 m |
| 6635-01-519-4298 | Transducer,Supersoni | Watch 18 | one active source in SAM out of 3 approved (1 expired, 1 unverified); AMSC P on the latest solicitation: only approved sources may supply | 31 active · 1 expired · 1 unverified | Aug 2026$737.20 | 1 in 12 m |
| 6635-01-701-6392 | Plate,Imaging,Radiat | 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 | Jul 2026$1,025.00 | 1 in 12 m |
| 6635-01-681-8597 | Camera,Light | Watch 15 | one active source in SAM out of 2 approved (0 expired, 1 unverified) | 21 active · 0 expired · 1 unverified | Dec 2025$6,625.50 | 1 |
| 6635-00-527-6507 | Tensiometer | Watch 15 | one active source in SAM out of 4 approved (0 expired, 3 unverified) | 41 active · 0 expired · 3 unverified | Apr 2026$805.00 | 1 in 12 m |
| 6635-00-573-0824 | Tester,Torque Wrench | Watch 15 | solicited in the last 12 months; last award Aug 2013 | 20 active · 0 expired · 2 unverified | Aug 2013$3,732.00 | 1 in 12 m |
| 6635-01-074-9979 | Tensiometer | Watch 15 | one active source in SAM out of 3 approved (1 expired, 1 unverified) | 31 active · 1 expired · 1 unverified | Dec 2025$369.98 | 1 in 12 m |
| 6635-01-583-1321 | Meter,Density,Digita | Watch 15 | solicited in the last 12 months; last award Aug 2021 | 22 active · 0 expired · 0 unverified | Aug 2021$168.44 | 1 in 12 m |
| 6635-01-591-3752 | Tensiometer | Watch 15 | one active source in SAM out of 4 approved (0 expired, 3 unverified) | 41 active · 0 expired · 3 unverified | Jan 2026$1,381.23 | 1 in 12 m |
| 6635-01-621-7849 | Penetrometer | Watch 15 | single approved source (registered in SAM) | 11 active · 0 expired · 0 unverified | Jun 2026$2,722.07 | 1 in 12 m |
| 6635-01-626-5116 | Penetrant Test Pane | Watch 15 | single approved source (registered in SAM) | 11 active · 0 expired · 0 unverified | May 2026$927.00 | 1 in 12 m |
| 6635-01-722-2682 | Probe,Eddy Current | Watch 15 | single approved source (registered in SAM) | 11 active · 0 expired · 0 unverified | none on record | — |
| 6635-01-723-7955 | Detector,Metal Flaw,Electronic | Watch 15 | single approved source (registered in SAM) | 11 active · 0 expired · 0 unverified | none on record | — |
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.