The Cock,plug, cataloged under National Stock Number 4820-00-425-4871, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Electric Materials Company. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-425-4871 |
| Primary Part Number | 508-3-41N |
| Item Name | Cock,plug |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Electric Materials Company |
| Status | ACTIVE |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Flow Style | TWO WAY TWO PORT 90 DEGREE PLUG TURN |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | NPT ALL ENDS |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| 508-3-41N | The Electric Materials Company (USA) |
| Reference | Meaning |
|---|---|
| 87-292195 | 3/9 Design control — primary reference Lucas Western Inc |
NSN 4820-00-425-4871 is a Cock,plug, manufactured by The Electric Materials Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-425-4871 has 1 manufacturer part number on file: 508-3-41N (The Electric Materials Company).
Key specifications for 508-3-41N: Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Flow Style: TWO WAY TWO PORT 90 DEGREE PLUG TURN; Thread Direction: RIGHT-HAND ALL ENDS. 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.