The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-259-8845, 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 Bae Systems (operations) Limited. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-259-8845 |
| Primary Part Number | 5412-00043005 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Bae Systems (operations) Limited |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 PREFORMED PACKING |
| Connection Style | FLARELESS ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION |
| Connection Type | EXTERNAL QUICK DISCONNECT ALL ENDS |
| Style Designator | MALE COUPLING HALF |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Quick Disconnect Nominal Size | 0.250 INCHES ALL ENDS IN |
| Leg Length | 0.789 INCHES NOMINAL IN |
| Nominal Thread Size | 0.437 INCHES ALL ENDS IN |
| Seat Angle | 20.0 DEGREES |
| Exterior Color | BLUE |
| Thread Class | 2A ALL ENDS A |
| Material | STEEL BODY |
| Quick Disconnect Method | PUSH-PULL ALL ENDS |
| Thread Series Designator | UNF 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 |
|---|---|
| 5412-00043005 | Bae Systems (operations) Limited (GBR) |
| SS-QC4-D-400K5 | Swagelok Co (USA) |
| Reference | Meaning |
|---|---|
| SS-QC4-D-400K5 | 3/9 Design control — primary reference Cajon Co |
NSN 4730-01-259-8845 is a Coupling Half,quick Disconnect, manufactured by Bae Systems (operations) Limited, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-259-8845 has 2 manufacturer part numbers on file: 5412-00043005 (Bae Systems (operations) Limited), SS-QC4-D-400K5 (Swagelok Co).
Key specifications for 5412-00043005: Furnished Items and Quantity: 1 PREFORMED PACKING; Connection Style: FLARELESS ALL ENDS; Connection Type: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION; Connection Type: EXTERNAL QUICK DISCONNECT ALL ENDS. 15 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.