The Reducer,pipe, cataloged under National Stock Number 4730-01-357-5655, 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 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-357-5655 |
| Primary Part Number | PWA52779-13 |
| Item Name | Reducer,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Nominal Overall Length | 1.375 INCHES IN |
| Connection Type | THREADED EXTERNAL PIPE ALL ENDS |
| Nominal Thread Size | 0.250 INCHES FIRST END IN |
| Material | STEEL COMP 1018 OR STEEL COMP 1020 OVERALL |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| PWA52779-13 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| PWA52779 | D/9 Drawing number reference only Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 4730-01-357-5655 is a Reducer,pipe, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-357-5655 has 1 manufacturer part number on file: PWA52779-13 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for PWA52779-13: Connection Style: PLAIN (PIPE) ALL ENDS; Nominal Overall Length: 1.375 INCHES IN; Connection Type: THREADED EXTERNAL PIPE ALL ENDS; Nominal Thread Size: 0.250 INCHES FIRST END IN. 6 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.