The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-558-3713, 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 Transdigm Inc Div Adelwiggins Group. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-558-3713 |
| Primary Part Number | 51281-2 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Transdigm Inc Div Adelwiggins Group |
| Status | ACTIVE |
| 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 |
|---|---|
| 51281-2 PRIMARY | Transdigm Inc Div Adelwiggins Group (USA) |
| 5793301 FIND 137 | Naval Sea Systems Command (USA) |
NSN 4730-01-558-3713 is a Coupling Half,quick Disconnect, manufactured by Transdigm Inc Div Adelwiggins Group, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-558-3713 has 2 manufacturer part numbers on file: 51281-2 (Transdigm Inc Div Adelwiggins Group), 5793301 FIND 137 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 4240-01-580-6933, 4140-01-670-0079. Verify interchangeability with system specifications before substitution.
Key specifications for 51281-2: Special Features: NHA: AFT BODY ASSEMBLY, 5793301 (53711); Part Name Assigned by Controlling Agency: QUICK DISCONNECT, MALE; End Item Identification: SUBMARINE CLASS. 0 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.