The Valve,check, cataloged under National Stock Number 4820-01-351-9884, 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 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-351-9884 |
| Primary Part Number | 12364331 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Flange Shape | ROUND FIRST END |
| Flange Face Design | PLAIN FIRST END |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Connection Type | FLANGE FIRST END |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM A322 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A331 ASSN STD 2ND MATERIAL RESPONSE BODY |
| Thread Direction | RIGHT-HAND SECOND END |
| Nominal Thread Size | 0.500 INCHES SECOND END IN |
| Thread Class | 2A SECOND END A |
| Material | STEEL COMP 4140 BODY |
| Thread Series Designator | UNF SECOND END |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.110 INCHES FIRST END IN |
| 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 |
|---|---|
| 12364331 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12364331 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-351-9884 is a Valve,check, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-351-9884 has 1 manufacturer part number on file: 12364331 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12364331: Flow Control Device: BALL; Flange Shape: ROUND FIRST END; Flange Face Design: PLAIN FIRST END; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END. 15 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.