The Valve,safety Relief, cataloged under National Stock Number 4820-00-486-6043, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Huck International, Inc. Div Kingston Operations. Government technical data includes 20 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 | 4820-00-486-6043 |
| Primary Part Number | 628 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Huck International, Inc. Div Kingston Operations |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Renewable Seat Ring Type | PRESSED-IN |
| Connection Style | GASKET SEAL(BOSS) FIRST END |
| Connection Type | THREADED INTERNAL BOSS FIRST END |
| Style Designator | ANGLE |
| Adjustable Pressure Range | +1000.0 TO 4100.0 POUNDS PER SQUARE INCH LBS |
| Features Provided | BONNET PACKING |
| Bonnet Type | INSIDE SPRING |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.437 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Surface Treatment | ANODIZE LOCATION NOT OTHERWISE SPECIFIED |
| Bonnet Attachment Method | THREADED |
| Thread Class | 3B FIRST END |
| Thread Quantity Per Inch | 20 FIRST END |
| Material | STEEL SEAT |
| Material | STEEL STEM |
| Material | ALUMINUM ALLOY BODY |
| Thread Series Designator | UNF FIRST END |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 628 PRIMARY | Huck International, Inc. Div Kingston Operations (USA) |
NSN 4820-00-486-6043 is a Valve,safety Relief, manufactured by Huck International, Inc. Div Kingston Operations, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-486-6043 has 1 manufacturer part number on file: 628 (Huck International, Inc. Div Kingston Operations).
Key specifications for 628: Flow Control Device: POPPET; Renewable Seat Ring Type: PRESSED-IN; Connection Style: GASKET SEAL(BOSS) FIRST END; Connection Type: THREADED INTERNAL BOSS FIRST END. 20 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.