The Reducer,pipe, cataloged under National Stock Number 4730-01-464-0174, 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 17 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-464-0174 |
| Item Name | Reducer,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 BRAZING RING |
| Nominal Pipe Size Accommodated | 0.250 INCHES SECOND END IN |
| Nominal Pipe Size Accommodated | 0.750 INCHES FIRST END IN |
| Connection Style | STREAMLINED W/ ONE BRAZING RING (PIPE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Nominal Overall Length | 1.250 INCHES IN |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Connection Type | UNTHREADED EXTERNAL PIPE SECOND END |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Maximum Operating Temp | 425.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Maximum Operating Temp | 150.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Pipe Wall Thickness Designation for Which Designed | SCHEDULE 80 ALL ENDS |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Material | COPPER ALLOY OVERALL |
| Reducer Type | CONCENTRIC |
| 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 |
|---|---|
| M1183/8-XXA | 2/2 Government specification standardization U.S. Government activity |
| MIL-F-1183/8 | 4/1 Identification reference U.S. Government activity |
| 5150-147 | 5/1 Secondary reference Flagg Stanley G & Co Inc Dba Flagg Brass |
NSN 4730-01-464-0174 is a Reducer,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-474-2493. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-464-0174: Furnished Items and Quantity: 1 BRAZING RING; Nominal Pipe Size Accommodated: 0.250 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 0.750 INCHES FIRST END IN; Connection Style: STREAMLINED W/ ONE BRAZING RING (PIPE) FIRST END. 17 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.