The Cock,shutoff,screw Stem, cataloged under National Stock Number 4820-00-824-8779, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-824-8779 |
| Item Name | Cock,shutoff,screw Stem |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | NEEDLE |
| Furnished Items and Quantity | 1 FERRULE |
| Connection Style | COMPRESSION (TUBE) SECOND END |
| Connection Style | PLAIN (PIPE) FIRST END |
| Seat Nominal Radius | 0.062 INCHES SECOND END IN |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Style Designator | STRAIGHT THRU |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Nominal Thread Size | 0.250 INCHES FIRST END IN |
| Thread Class | 3A SECOND END A |
| Thread Quantity Per Inch | 24 SECOND END |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Thread Series Designator | UNS SECOND END |
| Thread Series Designator | NPT FIRST END |
| 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 |
| Reference | Meaning |
|---|---|
| 141EF | 3/9 Design control — primary reference Imperial |
NSN 4820-00-824-8779 is a Cock,shutoff,screw Stem, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-824-8779: Flow Control Device: NEEDLE; Furnished Items and Quantity: 1 FERRULE; Connection Style: COMPRESSION (TUBE) SECOND END; Connection Style: PLAIN (PIPE) FIRST END. 18 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.