The Coupling Assembly,quick Disconne, cataloged under National Stock Number 4730-00-577-8014, 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 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-577-8014 |
| Primary Part Number | LL6H31XLL6K31 |
| Item Name | Coupling Assembly,quick Disconne |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Tuthill Corp Hansen Coupling Div |
| Status | ACTIVE |
| Connection Style | PLAIN FIRST FLUID END CONNECTION |
| Connection Type | THREADED INTERNAL PIPE FIRST FLUID END CONNECTION |
| Style Designator | COUPLING ASSEMBLY |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Operating Pressure | 800.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Operating Pressure | 800.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Operating Pressure | 800.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Operating Pressure | 800.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM THIRD RESPONSE LBS |
| Quick Disconnect Nominal Size | 0.750 INCHES ALL ENDS IN |
| Leg Length | 0.656 INCHES NOMINAL IN |
| Features Provided | SELF-SEALING |
| Nominal Thread Size | 0.750 INCHES FIRST FLUID END CONNECTION IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL OVERALL |
| Quick Disconnect Method | PUSH-PULL ALL ENDS |
| Thread Series Designator | NPT FIRST FLUID END CONNECTION |
| 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 |
|---|---|
| LL6H31XLL6K31 PRIMARY | Tuthill Corp Hansen Coupling Div (USA) |
NSN 4730-00-577-8014 is a Coupling Assembly,quick Disconne, manufactured by Tuthill Corp Hansen Coupling Div, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-577-8014 has 1 manufacturer part number on file: LL6H31XLL6K31 (Tuthill Corp Hansen Coupling Div).
Key specifications for LL6H31XLL6K31: Connection Style: PLAIN FIRST FLUID END CONNECTION; Connection Type: THREADED INTERNAL PIPE FIRST FLUID END CONNECTION; Style Designator: COUPLING ASSEMBLY; Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL. 16 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.