The Cock,drain, cataloged under National Stock Number 4820-01-431-2499, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-431-2499 |
| Primary Part Number | 12446751 |
| Item Name | Cock,drain |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Connection Style | PLAIN (HOSE) SECOND END |
| Connection Style | BARBED-BEADED (HOSE) FIRST END |
| Nominal Inside Diameter Hose Accommodated | 0.290 INCHES FIRST END IN |
| Nominal Inside Diameter Hose Accommodated | 0.250 INCHES SECOND END IN |
| Connection Type | UNTHREADED EXTERNAL HOSE ALL ENDS |
| Style Designator | ANGLE |
| Maximum Operating Temp | 125.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY STEM |
| 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 |
|---|---|
| 12446751 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 4820PL0370812 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4820-01-431-2499 is a Cock,drain, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-431-2499 has 1 manufacturer part number on file: 12446751 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12446751: Connection Style: PLAIN (HOSE) SECOND END; Connection Style: BARBED-BEADED (HOSE) FIRST END; Nominal Inside Diameter Hose Accommodated: 0.290 INCHES FIRST END IN; Nominal Inside Diameter Hose Accommodated: 0.250 INCHES SECOND END IN. 11 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.