The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-00-934-8071, 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 12 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-934-8071 |
| Primary Part Number | LL6K31 |
| 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 |
| Connection Style | PLAIN ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE FIRST FLUID END CONNECTION |
| Connection Type | EXTERNAL QUICK DISCONNECT ALL ENDS |
| Style Designator | MALE COUPLING HALF |
| Leg Length | 0.670 INCHES NOMINAL IN |
| Features Provided | SELF-SEALING |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Surface Treatment | PASSIVATE BODY |
| Test Data Document | 89661-328C024H16 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| Material | STEEL 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 |
|---|---|
| LL6K31 PRIMARY | Tuthill Corp Hansen Coupling Div (USA) |
| LL6-KP-31 | Tuthill Corp Hansen Coupling Div (USA) |
| K6S/S PRIMARY | Foster Manufacturing Co, Inc. Dba Foster Manufacturing Co (USA) |
| Reference | Meaning |
|---|---|
| 44803-034-00-6 | C/1 Advisory reference — outside the item-of-supply concept Bae Systems Maritime Services Limited |
| 328C024H16 | 7/2 Vendor item drawing reference U.S. Government activity |
| 44803-034-6 | 5/9 Secondary reference British Aerospace Defence Systems Ltd T/a Bae Systems |
| SH6-63 | 5/9 Secondary reference U.S. Government activity |
| 44803-034-0-6 | 5/9 Secondary reference British Aerospace Defence Systems Ltd T/a Bae Systems |
| 6511126 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| SH6-63 | C/1 Advisory reference — outside the item-of-supply concept Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters |
| 44803-034-00-6 | 5/9 Secondary reference British Aerospace Defence Systems Ltd T/a Bae Systems |
| 44803-034-0-6 | C/1 Advisory reference — outside the item-of-supply concept Bae Systems Maritime Services Limited |
| SH6-63 | C/1 Advisory reference — outside the item-of-supply concept Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupling Division |
NSN 4730-00-934-8071 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 4730-00-934-8071 has 3 manufacturer part numbers on file: LL6K31 (Tuthill Corp Hansen Coupling Div), LL6-KP-31 (Tuthill Corp Hansen Coupling Div), K6S/S (Foster Manufacturing Co, Inc. Dba Foster Manufacturing Co).
Key specifications for LL6K31: Connection Style: PLAIN ALL ENDS; Connection Type: THREADED INTERNAL PIPE FIRST FLUID END CONNECTION; Connection Type: EXTERNAL QUICK DISCONNECT ALL ENDS; Style Designator: MALE COUPLING HALF. 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.