The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-514-6685, 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 Naval Sea Systems Command. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-514-6685 |
| Primary Part Number | 6391450 FIND 022 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Style Designator | MALE COUPLING HALF |
| Leg Length | 1.5875 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 6391450 FIND 022 PRIMARY | Naval Sea Systems Command (USA) |
| 6534K78 | Mcmaster-Carr Supply Company (USA) |
| Reference | Meaning |
|---|---|
| 6391450 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-514-6685 is a Coupling Half,quick Disconnect, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-514-6685 has 2 manufacturer part numbers on file: 6391450 FIND 022 (Naval Sea Systems Command), 6534K78 (Mcmaster-Carr Supply Company).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-514-7089, 3120-01-515-0609. Verify interchangeability with system specifications before substitution.
Key specifications for 6391450 FIND 022: Criticality Code Justification: FEAT; Style Designator: MALE COUPLING HALF; Leg Length: 1.5875 INCHES NOMINAL IN; Special Features: WEAPON SYSTEM ESSENTIAL; QDC ID .438IN, BODY SIZE .375IN IN. 3 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.