The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-005-1237, 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 Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupler Division. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-005-1237 |
| Primary Part Number | VHC4-4-56V |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupler Division |
| Status | ACTIVE |
| Connection Style | FLARED ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION |
| Connection Type | INTERNAL QUICK DISCONNECT ALL ENDS |
| Style Designator | MALE COUPLING HALF |
| Material Document and Classification | AISIC1144 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Quick Disconnect Nominal Size | 0.500 INCHES ALL ENDS IN |
| Leg Length | 0.550 INCHES NOMINAL IN |
| Features Provided | SELF-SEALING |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Seat Angle | 37.0 DEGREES |
| Surface Treatment | CADMIUM AND CHROMATE BODY |
| Thread Class | 3A ALL ENDS A |
| Material | STEEL BODY |
| Quick Disconnect Method | SPRING PUSH-PULL ALL ENDS |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Furnished Items | PREFORMED PACKING |
| 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 |
|---|---|
| VHC4-4-56V PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupler Division (USA) |
| Reference | Meaning |
|---|---|
| UA1555-6 | 5/2 Secondary reference U.S. Government activity |
| UA1555 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-005-1237 is a Coupling Half,quick Disconnect, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupler Division, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-005-1237 has 1 manufacturer part number on file: VHC4-4-56V (Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupler Division).
6 possible matches (shared part number, not a government interchangeability claim): 4730-01-007-5914, 4730-01-051-8372, 4730-01-051-8373. Verify interchangeability with system specifications before substitution.
Key specifications for VHC4-4-56V: Connection Style: FLARED ALL ENDS; Connection Type: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION; Connection Type: INTERNAL QUICK DISCONNECT ALL ENDS; Style Designator: MALE COUPLING HALF. 17 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.