The Coupling Half,self-Sealing, cataloged under National Stock Number 4730-01-434-5449, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-434-5449 |
| Item Name | Coupling Half,self-Sealing |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | DOUBLE THREADED SECTION BOSS FITTING GASKET W/ LOCKNUT SEALING ALL ENDS |
| Connection Type | THREADED EXTERNAL BOSS FIRST FLUID END CONNECTION |
| Style Designator | MALE COUPLING HALF |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Surface Treatment | ANODIZE BODY |
| Thread Class | 3A ALL ENDS A |
| Material | ALUMINUM ALLOY BODY |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 227-026 | 7/1 Vendor item drawing reference U.S. Government activity |
| 227-026-0002 | 5/2 Secondary reference U.S. Government activity |
| ZLN-1455PX-8-B8 | 3/9 Design control — primary reference New Sd Inc Seaton-Wilson Div Sub of Bei Electronics Inc |
NSN 4730-01-434-5449 is a Coupling Half,self-Sealing, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
5 possible matches (shared part number, not a government interchangeability claim): 4730-01-434-5450, 4730-01-434-5452, 4730-01-434-5453. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-434-5449: Connection Style: DOUBLE THREADED SECTION BOSS FITTING GASKET W/ LOCKNUT SEALING ALL ENDS; Connection Type: THREADED EXTERNAL BOSS FIRST FLUID END CONNECTION; Style Designator: MALE COUPLING HALF; Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 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.
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.