The Valve,plug, cataloged under National Stock Number 4820-00-481-2357, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-481-2357 |
| Item Name | Valve,plug |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE |
| Connection Style | GASKET SEAL(BOSS) ALL ENDSGASKET SEAL(BOSS) ALL ENDS |
| Connection Type | THREADED INTERNAL BOSS ALL ENDSTHREADED INTERNAL BOSS ALL ENDS |
| Material Document and Classification | FED STD 66,SERIES 440 FED STD 2ND MATERIAL RESPONSE PACKING |
| Flow Style | THREE-WAY TWO PORT 90 DEGREE PLUG TURNTHREE-WAY TWO PORT 90 DEGREE PLUG TURN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Features Provided | NONADJUSTABLE ROTATIONNONADJUSTABLE ROTATION |
| Thread Direction | RIGHT-HAND ALL ENDSRIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.437 INCHES ALL ENDS0.437 INCHES ALL ENDS IN |
| Maximum Operating Temp | 160.0 FAHRENHEIT SINGLE RESPONSE160.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Surface Treatment | ANODIZE |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Thread Class | 3B ALL ENDS3B ALL ENDS |
| Material | ALUMINUM ALLOY SEATALUMINUM ALLOY BODY |
| Material | RUBBER SYNTHETIC AND STEEL CORROSION RESISTING PACKING |
| Material | STEEL COMP 303 FLOW CONTROL DEVICEALUMINUM ALLOY SEAT |
| Material | STEEL COMP 303 STEMRUBBER SYNTHETIC AND STEEL CORROSION RESISTING PACKING |
| Material | STEEL COMP 303 STEMSTEEL COMP 303 FLOW CONTROL DEVICE |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Valve Operation Method | MANUALMANUAL |
| 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 |
|---|---|
| 8421-4D26P | 3/9 Design control — primary reference U.S. Government activity |
| 8421-4D26P | C/1 Advisory reference — outside the item-of-supply concept Engineered Mechanical Components Inc Affil of Jamieson Mfg Co Inc |
| 322-1083-060 | 5/9 Secondary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
NSN 4820-00-481-2357 is a Valve,plug, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-481-2357: Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE; Connection Style: GASKET SEAL(BOSS) ALL ENDSGASKET SEAL(BOSS) ALL ENDS; Connection Type: THREADED INTERNAL BOSS ALL ENDSTHREADED INTERNAL BOSS ALL ENDS; Material Document and Classification: FED STD 66,SERIES 440 FED STD 2ND MATERIAL RESPONSE PACKING. 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.