The Adapter Assembly,valve, cataloged under National Stock Number 4730-01-520-9181, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is General Dynamics Land Systems Inc.. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-520-9181 |
| Primary Part Number | 12438343 |
| Item Name | Adapter Assembly,valve |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | General Dynamics Land Systems Inc. |
| Status | ACTIVE |
| Material | ALUMINUM ALLOY OR STEEL |
| Thread Size and Series/type Designator | 7/16-20UNF-28 THD UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4730-01-520-9181 is a Adapter Assembly,valve, manufactured by General Dynamics Land Systems Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-520-9181 has 2 manufacturer part numbers on file: 12438343 (General Dynamics Land Systems Inc.), 82274 (Lucas Auto Air Conditioning).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-687-6357. Verify interchangeability with system specifications before substitution.
Key specifications for 12438343: Overall Length: 1.100 INCHES NOMINAL IN; Overall Width: 0.560 INCHES NOMINAL IN; End Item Identification: M1A2 COOLING INSTALLING SEPTIC TANK; Material: ALUMINUM ALLOY OR STEEL. 2 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.