The Cap,valve, cataloged under National Stock Number 1650-00-504-4577, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-504-4577 |
| Item Name | Cap,valve |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Status | ACTIVE |
| 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 |
|---|---|
| 20D100B3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1650-00-504-4577 is a Cap,valve, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
Key specifications for 1650-00-504-4577: Special Features: MATERIAL STEEL QQ-S-763 CLASS 416 ANNEALED,OVERALL LENGTH 0.706 IN.,DIAMETER 1.430 IN. MINIMUM AND 1.434 IN. MAXIMUM,HEAD WIDTH 0.370 IN. MINIMUM AND 0.375 IN. MAXIMUM,SHOULDER 0.500 IN. DIAMETER,UNDERCUT HEAD 0.375 IN. WIDE 0.281 IN. DEEP,CIRCULAR CROSS CUT HOLE IN CENTER 0.250 IN. MINIMUM DIAMETER AND 0.253 IN. MAXIMUM DIAMETER WITH CROSS CUTS 0.070 IN. MINIMUM WIDTH AND 0.075 IN. MAXIMUM WIDTH 0.044 IN. LONG EXTENDING FROM CIRCLE ON BOTH SIDES,HOLE IN HEAD 0.670 IN. FROM CENTER 0.062 IN. MINIMUM DIAMETER AND 0.065 IN. MAXIMUM DIAMETER 0.250 IN. DEEP IN. 0 specifications are 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 1650-00-504-4577 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.