The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-629-5679, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Bird-Johnson Propeller Company, Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Bird-Johnson Propeller Company, Llc (CAGE 07309) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-629-5679 |
| Primary Part Number | 6172P90022 FIND NO 1 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Bird-Johnson Propeller Company, Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| 6172P90022 FIND NO 1 | Bird-Johnson Propeller Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 208781-01D | 3/2 Design control — primary reference U.S. Government activity |
| 208781 P/N 20878-01D | 5/2 Secondary reference U.S. Government activity |
| 208948 FIND NO.1 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| P-3-4-77 | 5/1 Secondary reference Bird-Johnson Propeller Company, Llc |
| 208782 FIND NO 1 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-629-5679 is a Valve,relief,pressure and Temper, manufactured by Bird-Johnson Propeller Company, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-629-5679 has 1 manufacturer part number on file: 6172P90022 FIND NO 1 (Bird-Johnson Propeller Company, Llc).
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.