The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-459-5991, 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 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-459-5991 |
| Primary Part Number | ML2-H16-143 |
| 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 |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST FLUID END CONNECTION |
| Style Designator | MALE COUPLING HALF |
| Material | STEEL BODY |
| Quick Disconnect Method | SPRING PUSH-LOCK FIRST QUICK DISCONNECT END |
| 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 |
|---|---|
| 7245940 FIND 55 | Naval Sea Systems Command (USA) |
| 7245941 FIND 40 | Naval Sea Systems Command (USA) |
| ML2-H16-143 PRIMARY | Tuthill Corp Hansen Coupling Div (USA) |
| Reference | Meaning |
|---|---|
| ML2-H6-143 | 5/9 Secondary reference Tuthill Corp Hansen Coupling Div |
NSN 4730-01-459-5991 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 4730-01-459-5991 has 3 manufacturer part numbers on file: 7245940 FIND 55 (Naval Sea Systems Command), 7245941 FIND 40 (Naval Sea Systems Command), ML2-H16-143 (Tuthill Corp Hansen Coupling Div).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-680-8612. Verify interchangeability with system specifications before substitution.
Key specifications for ML2-H16-143: Connection Type: UNTHREADED INTERNAL TUBE FIRST FLUID END CONNECTION; Style Designator: MALE COUPLING HALF; Overall Length: 2.400 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: SOCKET QUICK DISCONNECT. 4 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.