The Coupling Half,self-Sealing, cataloged under National Stock Number 4730-01-475-2743, 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 Transdigm Inc Div Adelwiggins Group. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-475-2743 |
| Primary Part Number | 11438156-4 |
| Item Name | Coupling Half,self-Sealing |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Transdigm Inc Div Adelwiggins Group |
| Status | ACTIVE |
| Style Designator | MALE COUPLING HALF |
| Operating Pressure | 500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Operating Pressure | 500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Maximum Operating Temp | 121.0 CELSIUS SECOND RESPONSE DEGC |
| Maximum Operating Temp | 121.0 CELSIUS FIRST RESPONSE DEGC |
| Media for Which Designed | WATER FIRST RESPONSE |
| Media for Which Designed | ALCOHOL SECOND RESPONSE |
| Material | STEEL CORROSION RESISTING BODY |
| 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 |
|---|---|
| R255R128WE8 | Transdigm Inc Div Adelwiggins Group (USA) |
| 11438156-4 PRIMARY | Transdigm Inc Div Adelwiggins Group (USA) |
| Reference | Meaning |
|---|---|
| 11438156-4 | 7/2 Vendor item drawing reference Us Army Aviation and Missile Command |
NSN 4730-01-475-2743 is a Coupling Half,self-Sealing, manufactured by Transdigm Inc Div Adelwiggins Group, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-475-2743 has 2 manufacturer part numbers on file: R255R128WE8 (Transdigm Inc Div Adelwiggins Group), 11438156-4 (Transdigm Inc Div Adelwiggins Group).
Key specifications for 11438156-4: Style Designator: MALE COUPLING HALF; Overall Length: 2.541 INCHES MAXIMUM IN; Operating Pressure: 500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS; Operating Pressure: 500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS. 8 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.