The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-189-3235, 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 Bowes Mfg Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-189-3235 |
| Primary Part Number | 51534 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Bowes Mfg Inc |
| Status | ACTIVE |
| Connection Style | BARBED OR SERRATED END ALL ENDS |
| Nominal Inside Diameter Hose Accommodated | 0.500 INCHES ALL ENDS IN |
| Connection Type | UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION |
| Connection Type | INTERNAL QUICK DISCONNECT ALL ENDS |
| Style Designator | MALE COUPLING HALF |
| Material | STEEL BODY |
| Quick Disconnect Method | TWIST-LOCK ALL ENDS |
| 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 |
|---|---|
| 51534 PRIMARY | Bowes Mfg Inc (USA) |
| Reference | Meaning |
|---|---|
| HF-50-S | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-189-3235 is a Coupling Half,quick Disconnect, manufactured by Bowes Mfg Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-189-3235 has 1 manufacturer part number on file: 51534 (Bowes Mfg Inc).
3 possible matches (shared part number, not a government interchangeability claim): 6532-01-317-0949, 7610-01-557-1292, 7310-01-583-1335. Verify interchangeability with system specifications before substitution.
Key specifications for 51534: Connection Style: BARBED OR SERRATED END ALL ENDS; Nominal Inside Diameter Hose Accommodated: 0.500 INCHES ALL ENDS IN; Connection Type: UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION; Connection Type: INTERNAL QUICK DISCONNECT ALL ENDS. 7 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.