The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-340-5889, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-340-5889 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 CAP |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL ALL ENDS |
| Connection Type | EXTERNAL QUICK DISCONNECT ALL ENDS |
| Connection Type | THREADED EXTERNAL BOSS FIRST FLUID END CONNECTION |
| Style Designator | MALE COUPLING HALF |
| Material Document and Classification | AMS5643 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Features Provided | SELF-SEALING |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Thread Class | 3A ALL ENDS A |
| Material | STEEL BODY |
| Quick Disconnect Method | PUSH-PULL ALL ENDS |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) 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 |
| Reference | Meaning |
|---|---|
| Z-145 4-H-8-M8 | 3/9 Design control — primary reference New Sd Inc Seaton-Wilson Div Sub of Bei Electronics Inc |
| 7573314-007 | 5/9 Secondary reference General Dynamics Land Systems Inc. |
| 7573314 | 7/1 Vendor item drawing reference General Dynamics Land Systems Inc. |
NSN 4730-01-340-5889 is a Coupling Half,quick Disconnect, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-350-7507. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-340-5889: Furnished Items and Quantity: 1 CAP; Connection Style: EXTERNAL SEAT FOR GASKET SEAL ALL ENDS; Connection Type: EXTERNAL QUICK DISCONNECT ALL ENDS; Connection Type: THREADED EXTERNAL BOSS FIRST FLUID END CONNECTION. 12 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.