The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-00-050-9832, 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 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-050-9832 |
| Primary Part Number | B20H51 |
| 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 |
| Nominal Pipe Size Accommodated | 2.000 INCHES ALL ENDS IN |
| Connection Style | PLAIN ALL ENDS |
| Criticality Code Justification | FEAT |
| Style Designator | MALE COUPLING HALF |
| Leg Length | 2.920 INCHES NOMINAL IN |
| Features Provided | SELF-SEALING |
| Nominal Thread Size | 2.000 INCHES ALL ENDS IN |
| Material | COPPER ALLOY BODY |
| Quick Disconnect Method | PUSH-LOCK 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 | Y |
| Part Number | Manufacturer |
|---|---|
| B20H51 PRIMARY | Tuthill Corp Hansen Coupling Div (USA) |
| Reference | Meaning |
|---|---|
| MAT88479-2 | 1/2 Source control — Government-approved source U.S. Government activity |
| 6408-116 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-00-050-9832 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 4730-00-050-9832 has 1 manufacturer part number on file: B20H51 (Tuthill Corp Hansen Coupling Div).
Key specifications for B20H51: Nominal Pipe Size Accommodated: 2.000 INCHES ALL ENDS IN; Connection Style: PLAIN ALL ENDS; Criticality Code Justification: FEAT; Style Designator: MALE COUPLING HALF. 10 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.