The Reducer,pipe, cataloged under National Stock Number 4730-01-683-4161, 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 The American Society of Mechanical Engineers. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-683-4161 |
| Primary Part Number | B16.9,5X4CUNI(70/30)CL700BW |
| Item Name | Reducer,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 4.0 INCHES SECOND END IN |
| Nominal Pipe Size Accommodated | 5.0 INCHES FIRST END IN |
| Connection Style | BEVELED (PIPE) ALL ENDS |
| Nominal Overall Length | 5.00 INCHES IN |
| Connection Type | BUTT WELD PIPE ALL ENDS |
| Style Designator | PLAIN |
| Nominal Outside Diameter | 4.50 INCHES SECOND END IN |
| Nominal Outside Diameter | 5.56 INCHES FIRST END IN |
| 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 |
| Part Number | Manufacturer |
|---|---|
| B16.9,5X4CUNI(70/30)CL700BW PRIMARY | The American Society of Mechanical Engineers (USA) |
NSN 4730-01-683-4161 is a Reducer,pipe, manufactured by The American Society of Mechanical Engineers, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-683-4161 has 1 manufacturer part number on file: B16.9,5X4CUNI(70/30)CL700BW (The American Society of Mechanical Engineers).
Key specifications for B16.9,5X4CUNI(70/30)CL700BW: Nominal Pipe Size Accommodated: 4.0 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 5.0 INCHES FIRST END IN; Connection Style: BEVELED (PIPE) ALL ENDS; Nominal Overall Length: 5.00 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.