The Reducer,pipe, cataloged under National Stock Number 4730-01-024-0261, 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 Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-024-0261 |
| Primary Part Number | 1390 1-1/2X1-1/4 |
| Item Name | Reducer,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 1.500 INCHES FIRST END IN |
| Nominal Pipe Size Accommodated | 1.250 INCHES SECOND END IN |
| Connection Style | SOCKET (PIPE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Nominal Overall Length | 1.875 INCHES IN |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Connection Type | UNTHREADED EXTERNAL PIPE SECOND END |
| Material Document and Classification | ASTM A181 OR A105,GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pipe Wall Thickness Designation for Which Designed | SCHEDULE 80 FIRST END |
| Pipe Wall Thickness Designation for Which Designed | SCHEDULE STD SECOND END |
| Surface Treatment | OXIDE OUTSIDE |
| Media for Which Designed | FLUID FIRST RESPONSE |
| Media for Which Designed | AIR SECOND RESPONSE |
| Material | STEEL OR IRON 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 |
| Part Number | Manufacturer |
|---|---|
| 1390 1-1/2X1-1/4 PRIMARY | Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy (USA) |
| Reference | Meaning |
|---|---|
| B16-11 | 5/1 Secondary reference U.S. Government activity |
| 3367-R 1 1/2X1 1/4 | 5/9 Secondary reference Mindeco Corp |
NSN 4730-01-024-0261 is a Reducer,pipe, manufactured by Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-024-0261 has 1 manufacturer part number on file: 1390 1-1/2X1-1/4 (Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy).
Key specifications for 1390 1-1/2X1-1/4: Nominal Pipe Size Accommodated: 1.500 INCHES FIRST END IN; Nominal Pipe Size Accommodated: 1.250 INCHES SECOND END IN; Connection Style: SOCKET (PIPE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END. 15 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.