The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-00-884-4973, 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 Tuthill Corp Hansen Coupling Div. Government technical data includes 13 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-884-4973 |
| Primary Part Number | LL4T25 |
| Item Name | Coupling Half,quick Disconnect |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Tuthill Corp Hansen Coupling Div |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.500 INCHES ALL ENDS IN |
| Connection Style | PLAIN ALL ENDS |
| Mating End Identification | HANSEN MFG CO. COUPLING HALF,QUICK DISCONNECT,PART NO. LL4S25 |
| Connection Type | EXTERNAL QUICK DISCONNECT ALL ENDS |
| Connection Type | THREADED EXTERNAL PIPE FIRST FLUID END CONNECTION |
| Style Designator | MALE COUPLING HALF |
| Leg Length | 0.657 INCHES NOMINAL IN |
| Features Provided | SAFETY LOCKING FEATURE |
| Nominal Thread Size | 0.500 INCHES ALL ENDS IN |
| Surface Treatment | PASSIVATE BODY |
| Material | STEEL CORROSION RESISTING BODY |
| Quick Disconnect Method | PUSH-PULL ALL ENDS |
| Thread Series Designator | NPT 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 |
|---|---|
| LL4T25 PRIMARY | Tuthill Corp Hansen Coupling Div (USA) |
| Reference | Meaning |
|---|---|
| SST-N4M | C/1 Advisory reference — outside the item-of-supply concept Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupling Division |
| SST-N4M | 5/9 Secondary reference U.S. Government activity |
| 9984700 | 5/9 Secondary reference Us Army Aviation and Missile Command |
NSN 4730-00-884-4973 is a Coupling Half,quick Disconnect, manufactured by Tuthill Corp Hansen Coupling Div, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-884-4973 has 1 manufacturer part number on file: LL4T25 (Tuthill Corp Hansen Coupling Div).
Key specifications for LL4T25: Nominal Pipe Size Accommodated: 0.500 INCHES ALL ENDS IN; Connection Style: PLAIN ALL ENDS; Mating End Identification: HANSEN MFG CO. COUPLING HALF,QUICK DISCONNECT,PART NO. LL4S25; Connection Type: EXTERNAL QUICK DISCONNECT ALL ENDS. 13 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.