The Reducer,pipe, cataloged under National Stock Number 4730-00-720-3170, 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 W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-720-3170 |
| Primary Part Number | 8925042 |
| Item Name | Reducer,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.250 INCHES FIRST END IN |
| Nominal Pipe Size Accommodated | 0.250 INCHES SECOND END IN |
| Connection Style | PLAIN (PIPE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Leg Length | 0.500 INCHES NOMINAL ALL ENDS IN |
| Nominal Thread Size | 0.250 INCHES FIRST END IN |
| Nominal Thread Size | 0.250 INCHES SECOND END IN |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | NPT SECOND END |
| Thread Series Designator | NPT FIRST END |
| 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 |
|---|---|
| 115-B | Marshall Equipment (CAN) |
| 10658803-001 | General Dynamics Land Systems Canadacorp (CAN) |
| 8925042 PRIMARY | W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division (USA) |
| 10658803 | General Dynamics Land Systems Canadacorp (CAN) |
| 8925042 | Rolls-Royce Solutions America Inc (USA) |
| Reference | Meaning |
|---|---|
| 5129844 | 5/9 Secondary reference Rolls-Royce Solutions America Inc |
| 5129844 | 5/9 Secondary reference U.S. Government activity |
| 5155524 | 5/9 Secondary reference General Motors Corp |
| 8925042 | 5/9 Secondary reference U.S. Government activity |
| 5129844 | 5/9 Secondary reference General Motors Corp |
| 5155524 | 5/9 Secondary reference Rolls-Royce Solutions America Inc |
NSN 4730-00-720-3170 is a Reducer,pipe, manufactured by W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-720-3170 has 5 manufacturer part numbers on file: 115-B (Marshall Equipment), 10658803-001 (General Dynamics Land Systems Canadacorp), 8925042 (W.w. Williams Company, the Llc Dba W W Williams Company-Midwest Division), 10658803 (General Dynamics Land Systems Canadacorp), 8925042 (Rolls-Royce Solutions America Inc).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-181-9494. Verify interchangeability with system specifications before substitution.
Key specifications for 8925042: Nominal Pipe Size Accommodated: 0.250 INCHES FIRST END IN; Nominal Pipe Size Accommodated: 0.250 INCHES SECOND END IN; Connection Style: PLAIN (PIPE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END. 12 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.