The Pin and Seat Assembly,valve, cataloged under National Stock Number 1650-00-671-8458, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-671-8458 |
| Item Name | Pin and Seat Assembly,valve |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Status | ACTIVE |
| General Characteristics Item Description | CRES,0.497 IN. SEAT OD,0.258 IN. SEAT THK,0.715 IN. PIN LG,0.090 IN. PIN OD IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 15868 | 3/2 Design control — primary reference U.S. Government activity |
| 15868 | 5/9 Secondary reference Moog Inc Div Moog Inc., Space and Defense - Salt Lake City |
| 15868 | 5/9 Secondary reference E-Systems Inc Montek Div Fluid Controls Opns |
NSN 1650-00-671-8458 is a Pin and Seat Assembly,valve, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 5331-00-714-5264, 3040-01-063-5333, 4820-01-266-3679. Verify interchangeability with system specifications before substitution.
Key specifications for 1650-00-671-8458: General Characteristics Item Description: CRES,0.497 IN. SEAT OD,0.258 IN. SEAT THK,0.715 IN. PIN LG,0.090 IN. PIN OD IN. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1650-00-671-8458 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.