The Closure,valve Relief, cataloged under National Stock Number 4820-00-476-7160, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-476-7160 |
| Item Name | Closure,valve Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY QQ-A-225/6 2024-T351; ANODIZED MIL-A-2625 TYPE 1; 1.480 IN. LG O/A; HEX HEAD ONE END 0.688 IN. ACROSS FLATS; HEAD END THREADED INTERNAL 0.4375-20 UNJF 3B; BODY THREADED EXTERNAL 1.312-18 UNEF 3A 0.750 IN. FROM HEAD END 0.425 IN. THD LG A |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 84026 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-476-7160 is a Closure,valve Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 5355-00-519-5186, 2910-01-076-6937, 5331-01-260-4679. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-00-476-7160: General Characteristics Item Description: ALUMINUM ALLOY QQ-A-225/6 2024-T351; ANODIZED MIL-A-2625 TYPE 1; 1.480 IN. LG O/A; HEX HEAD ONE END 0.688 IN. ACROSS FLATS; HEAD END THREADED INTERNAL 0.4375-20 UNJF 3B; BODY THREADED EXTERNAL 1.312-18 UNEF 3A 0.750 IN. FROM HEAD END 0.425 IN. THD LG A. 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.
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.