The Valve,safety Relief, cataloged under National Stock Number 4820-01-485-3968, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tjw Inc Div Scs Cases. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-485-3968 |
| Primary Part Number | 211-1-020-06689-SCS |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Tjw Inc Div Scs Cases |
| Status | ACTIVE |
| Material Document and Classification | QQ-N-281 FED STD 1ST MATERIAL RESPONSE OR QQ-N-288 FED SPEC 1ST MATERIAL RESPONSE BODY |
| Maximum Operating Temp | 165.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Media for Which Designed | OXYGEN, LIQUID SINGLE RESPONSE |
| Material | NICKEL ALLOY AND COPPER ALLOY BODY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 211-1-020-06689-SCS PRIMARY | Tjw Inc Div Scs Cases (USA) |
NSN 4820-01-485-3968 is a Valve,safety Relief, manufactured by Tjw Inc Div Scs Cases, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-485-3968 has 1 manufacturer part number on file: 211-1-020-06689-SCS (Tjw Inc Div Scs Cases).
Key specifications for 211-1-020-06689-SCS: Material Document and Classification: QQ-N-281 FED STD 1ST MATERIAL RESPONSE OR QQ-N-288 FED SPEC 1ST MATERIAL RESPONSE BODY; Maximum Operating Temp: 165.0 FAHRENHEIT SINGLE RESPONSE DEGF; Disk Loading Method: SPRING; Special Features: THERE ARE NO HINGES USED IN THIS DESIGN. 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.