The Cock,poppet Drain, cataloged under National Stock Number 4820-00-780-0394, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 12 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-780-0394 |
| Primary Part Number | 2-43813-4 |
| Item Name | Cock,poppet Drain |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Connection Style | BEADED (HOSE) SECOND END |
| Connection Style | FLARELESS FIRST END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED EXTERNAL HOSE SECOND END |
| Style Designator | STRAIGHT THRU |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.562 INCHES FIRST END IN |
| Surface Treatment | ANODIZE |
| Material | ALUMINUM ALLOY BODY |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) 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 |
| Part Number | Manufacturer |
|---|---|
| 2-43813-4 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 465C77-2 | 5/2 Secondary reference U.S. Government activity |
| 465C77-4 | 3/2 Design control — primary reference U.S. Government activity |
| 2-43813-4 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| 2-43813-4 | 5/9 Secondary reference Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| 465C77-6 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-00-780-0394 is a Cock,poppet Drain, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-780-0394 has 1 manufacturer part number on file: 2-43813-4 (Northrop Grumman Systems Corporation).
Key specifications for 2-43813-4: Flow Control Device: POPPET; Connection Style: BEADED (HOSE) SECOND END; Connection Style: FLARELESS FIRST END; Connection Type: THREADED EXTERNAL TUBE FIRST END. 12 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.