The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-149-4989, 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 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-149-4989 |
| Primary Part Number | 6-K31-143 |
| 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 |
| Style Designator | MALE COUPLING HALF |
| Leg Length | 0.670 INCHES NOMINAL IN |
| Features Provided | SELF-SEALING |
| 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 |
|---|---|
| 426103 | Avtron Aerospace Inc (USA) |
| H6-63Y | Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupling Division (USA) |
| 6-K31-143 PRIMARY | Tuthill Corp Hansen Coupling Div (USA) |
| Reference | Meaning |
|---|---|
| H6-63Y | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-149-4989 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 4730-01-149-4989 has 3 manufacturer part numbers on file: 426103 (Avtron Aerospace Inc), H6-63Y (Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupling Division), 6-K31-143 (Tuthill Corp Hansen Coupling Div).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-437-0559. Verify interchangeability with system specifications before substitution.
Key specifications for 6-K31-143: Style Designator: MALE COUPLING HALF; Overall Length: 2.360 INCHES NOMINAL IN; Leg Length: 0.670 INCHES NOMINAL IN; Features Provided: SELF-SEALING. 3 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.