The Valve,safety Relief, cataloged under National Stock Number 4820-01-480-7040, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tulsa Winch, Inc.. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-480-7040 |
| Primary Part Number | 53049 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Tulsa Winch, Inc. |
| Status | ACTIVE |
| Connection Style | SWIVEL NUT,FLARELESS(TUBE) FIRST END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Style Designator | SCREW-IN CARTRIDGE |
| Material | ALUMINUM ALLOY BODY |
| Valve Operation Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-01-480-7040 is a Valve,safety Relief, manufactured by Tulsa Winch, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-480-7040 has 2 manufacturer part numbers on file: 53049 (Tulsa Winch, Inc.), 7HB503 (Oshkosh Defense Llc).
2 possible matches (shared part number, not a government interchangeability claim): 6680-01-521-3534, 3010-01-618-2124. Verify interchangeability with system specifications before substitution.
Key specifications for 53049: Connection Style: SWIVEL NUT,FLARELESS(TUBE) FIRST END; Connection Type: THREADED INTERNAL TUBE FIRST END; Style Designator: SCREW-IN CARTRIDGE; Special Features: SCREW CARTRIDGE FOR A CONTERBALANCE VALVE ASSY. 5 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.
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.