The Valve,safety Relief, cataloged under National Stock Number 4820-00-971-4755, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-971-4755 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Nominal Thread Size | 0.125 INCHES ALL ENDS IN |
| Mounting Facility | BRACKET(S) |
| Material | ZINC ALLOY BODY |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
|---|---|
| AR274-1L | 5/2 Secondary reference U.S. Government activity |
| 5549706 | C/1 Advisory reference — outside the item-of-supply concept General Motors Corp Delco Products Div Machine Control Systems |
| 5549706 | 3/9 Design control — primary reference Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 |
| 5549706 | 5/9 Secondary reference General Motors Corp |
| 5549706 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
NSN 4820-00-971-4755 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-971-4755: Connection Type: THREADED INTERNAL PIPE ALL ENDS; Nominal Thread Size: 0.125 INCHES ALL ENDS IN; Mounting Facility: BRACKET(S); Special Features: W/SYNTHETIC RUBBER AIR EXHAUST TUBE. 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.