The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-126-6841, 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 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-126-6841 |
| Primary Part Number | MAT88478-2 |
| 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 SECOND QUICK DISCONNECT END |
| Style Designator | MALE COUPLING HALF |
| Leg Length | 2.922 INCHES NOMINAL IN |
| Nominal Thread Size | 2.000 INCHES ALL ENDS IN |
| Material | STEEL CORROSION RESISTING BODY |
| Thread Series Designator | NPT ALL ENDS |
| Nuclear Hardness Critical Feature | HARDENED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | H |
| Part Number | Manufacturer |
|---|---|
| MAT88478-2 PRIMARY | Tuthill Corp Hansen Coupling Div (USA) |
| B20-K51 | Tuthill Corp Hansen Coupling Div (USA) |
| Reference | Meaning |
|---|---|
| 6408-117 | 5/2 Secondary reference U.S. Government activity |
| MAT88478-2 | 3/9 Design control — primary reference U.S. Government activity |
| MAT88478 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 4730-01-126-6841 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 4730-01-126-6841 has 2 manufacturer part numbers on file: MAT88478-2 (Tuthill Corp Hansen Coupling Div), B20-K51 (Tuthill Corp Hansen Coupling Div).
Key specifications for MAT88478-2: Connection Style: PLAIN ALL ENDS; Connection Type: THREADED INTERNAL PIPE FIRST FLUID END CONNECTION; Connection Type: EXTERNAL QUICK DISCONNECT SECOND QUICK DISCONNECT END; Style Designator: MALE COUPLING HALF. 9 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.
NSN 4730-01-126-6841 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.