The Reducer,pipe, cataloged under National Stock Number 4730-01-364-6038, 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 Acr Machine Llc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-364-6038 |
| Primary Part Number | 1551AS740-2 |
| Item Name | Reducer,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Acr Machine Llc |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.980 INCHES SECOND END IN |
| Connection Style | SOCKET (PIPE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Nominal Overall Length | 1.000 INCHES IN |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Connection Type | UNTHREADED INTERNAL PIPE SECOND END |
| Nominal Thread Size | 0.250 INCHES FIRST END IN |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | NPT SECOND END |
| 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 |
|---|---|
| 1551AS740-2 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 1551AS740-2 PRIMARY | Acr Machine Llc (USA) |
| Reference | Meaning |
|---|---|
| 1551AS740-2 | 5/9 Secondary reference Deep River Die and Tool Inc |
NSN 4730-01-364-6038 is a Reducer,pipe, manufactured by Acr Machine Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-364-6038 has 2 manufacturer part numbers on file: 1551AS740-2 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 1551AS740-2 (Acr Machine Llc).
Key specifications for 1551AS740-2: Nominal Pipe Size Accommodated: 0.980 INCHES SECOND END IN; Connection Style: SOCKET (PIPE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END; Nominal Overall Length: 1.000 INCHES IN. 10 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.