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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.
27 stock numbers at watch risk
| NSN | Item | Risk | Why | Sources | Last award | Open |
|---|---|---|---|---|---|---|
| 4510-01-495-4879 | Valve,Flush | 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 | 2 in 12 m |
| 4510-01-050-0233 | Valve,Float,Water Cl | 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 |
| 4510-01-382-4289 | Commode,Field | 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 |
| 4510-01-541-0667 | Strainer,Waste Drain | 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 |
| 4510-01-554-6303 | Shower Receptor,Coll | 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 |
| 4510-01-565-6459 | Water Closet | 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 |
| 4510-01-579-3370 | Valve,Flush | 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 |
| 4510-01-602-2056 | Strainer,Waste Drain | 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 P on the latest solicitation: only approved sources may supply | 21 active · 0 expired · 1 unverified | none on record | 1 in 12 m |
| 4510-01-605-4922 | Valve,Flush | Watch 31 | one active source in SAM out of 4 approved (0 expired, 3 unverified); solicited in the last 12 months; no award in our record; AMSC D on the latest solicitation: only approved sources may supply | 41 active · 0 expired · 3 unverified | none on record | 1 in 12 m |
| 4510-01-642-7951 | Urinal,Stationary | 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 |
| 4510-01-645-1669 | Kit,Deck Drain | 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 |
| 4510-00-247-1366 | Seat,Water Closet | Watch 25 | one active source in SAM out of 3 approved (0 expired, 2 unverified); solicited in the last 12 months; no award in our record | 31 active · 0 expired · 2 unverified | none on record | 1 in 12 m |
| 4510-01-201-1614 | Liner,Latrine End Wa | 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 |
| 4510-01-297-5279 | Baffle,Drain,Floor | Watch 25 | one active source in SAM out of 2 approved (0 expired, 1 unverified); solicited in the last 12 months; no award in our record | 21 active · 0 expired · 1 unverified | none on record | 1 in 12 m |
| 4510-01-311-3326 | Drain,Floor | 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 |
| 4510-01-631-1460 | Faucet Cprsn | 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 |
| 4510-01-633-1298 | Tube,Overflow,Water | 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 |
| 4510-25-160-6501 | Toilet,Marine | Watch 25 | no approved source on file in FLIS; solicited in the last 12 months; no award in our record; AMSC C on the latest solicitation: only approved sources may supply | 00 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 4510-01-509-2053 | Cover,Faucet Hole | Watch 22 | single approved source, SAM status unverified; solicited in the last 12 months; no award in our record; AMSC H on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | none on record | 1 in 12 m |
| 4510-01-536-2106 | Parts Kit,Lavatory | Watch 22 | single approved source, SAM status unverified; solicited in the last 12 months; no award in our record; AMSC C on the latest solicitation: only approved sources may supply | 10 active · 0 expired · 1 unverified | none on record | 1 in 12 m |
| 4510-01-588-7250 | Fountain,Eye And Fac | 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 |
| 4510-01-603-9361 | Drier,Hand,Electric | 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 |
| 4510-01-631-5448 | Bubbler,Drinking Fou | 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 |
| 4510-25-149-7100 | Controller,Special | Watch 20 | no approved source on file in FLIS; solicited in the last 12 months; no award in our record | 00 active · 0 expired · 0 unverified | none on record | 1 in 12 m |
| 4510-01-656-0130 | Sink,Scullery | 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 |
| 4510-01-669-5528 | Drain,Floor | 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 in 12 m |
| 4510-01-722-2232 | Parts Kit,Water Clos | 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 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.