The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-199-4508, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Saf Industries Llc Dba Saf Industries Llc Div Garkenyon. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-199-4508 |
| Primary Part Number | 95028-4 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Saf Industries Llc Dba Saf Industries Llc Div Garkenyon |
| Status | ACTIVE |
| First End Thread Direction | RIGHT-HAND |
| Body Style | STRAIGHT THRU |
| First End Thread Class | 3A A |
| First End Style Designator | EXTERNAL SEAT FOR GASKET SEAL |
| End Connection Quantity | 1 |
| First End Connection Type | THREADED EXTERNAL BOSS |
| Temp Adjustability | NOT ADJUSTABLE |
| First End Nominal Pipe Size Accommodated | 2.250 INCHES IN |
| 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 |
|---|---|
| 76Z2810-4 | Raytheon Company (USA) |
| 5759402-4 | Raytheon Company (USA) |
| 95028-4 PRIMARY | Saf Industries Llc Dba Saf Industries Llc Div Garkenyon (USA) |
| Reference | Meaning |
|---|---|
| 5759402 | D/9 Drawing number reference only Hughes Missile Systems Co San Diego |
| 5759402 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 76Z2810-4 | 5/9 Secondary reference Hughes Missile Systems Co San Diego |
| 5759402-4 | 5/9 Secondary reference Hughes Missile Systems Co San Diego |
| 76Z2810 | D/9 Drawing number reference only Hughes Missile Systems Co San Diego |
NSN 4820-01-199-4508 is a Valve,relief,pressure and Temper, manufactured by Saf Industries Llc Dba Saf Industries Llc Div Garkenyon, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-199-4508 has 3 manufacturer part numbers on file: 76Z2810-4 (Raytheon Company), 5759402-4 (Raytheon Company), 95028-4 (Saf Industries Llc Dba Saf Industries Llc Div Garkenyon).
1 possible match (shared part number, not a government interchangeability claim): 6520-01-732-3668. Verify interchangeability with system specifications before substitution.
Key specifications for 95028-4: First End Thread Direction: RIGHT-HAND; Body Style: STRAIGHT THRU; First End Thread Class: 3A A; First End Style Designator: EXTERNAL SEAT FOR GASKET SEAL. 8 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.