The Valve,relief, cataloged under National Stock Number 1420-01-181-8341, is classified within Federal Supply Class 1420 (Guided Missile Components) of the Guided Missiles group. The manufacturer of record is Naval Air Warfare Center Weapons Div. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Valve,relief |
| FSC / FSG | 1420 — Guided Missile Components (FSG 14) |
| Manufacturers | Naval Air Warfare Center Weapons Div (CAGE 12934); Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (CAGE 30003); Westfield Hydraulics Inc Dba Westfield Hydraulics Inc (CAGE 53730) |
| Parameter | Value |
|---|---|
| NSN | 1420-01-181-8341 |
| Primary Part Number | 639AS4966 |
| Item Name | Valve,relief |
| FSC / FSG | 1420 / 14 — Guided Missile Components |
| Manufacturer | Naval Air Warfare Center Weapons Div |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 639AS4966 PRIMARY | Naval Air Warfare Center Weapons Div (USA) |
| 639AS4966 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 639AS4966 | Westfield Hydraulics Inc Dba Westfield Hydraulics Inc (USA) |
| Reference | Meaning |
|---|---|
| 490130 | 5/9 Secondary reference Westfield Hydraulics Inc Dba Westfield Hydraulics Inc |
| 806RLA02A | 5/9 Secondary reference Saf Industries Llc Dba General Pneumatics |
NSN 1420-01-181-8341 is a Valve,relief, manufactured by Naval Air Warfare Center Weapons Div, classified under FSC 1420, Guided Missile Components. Status: active.
NSN 1420-01-181-8341 has 3 manufacturer part numbers on file: 639AS4966 (Naval Air Warfare Center Weapons Div), 639AS4966 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 639AS4966 (Westfield Hydraulics Inc Dba Westfield Hydraulics Inc).
1 possible match (shared part number, not a government interchangeability claim): 4470-01-278-3966. Verify interchangeability with system specifications before substitution.
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 1420-01-181-8341 has DEMIL Code Q. 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.