The Reducer,tube, cataloged under National Stock Number 4730-01-289-5508, 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 Atlas Copco Holyoke Inc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-289-5508 |
| Primary Part Number | CON00400 |
| Item Name | Reducer,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Atlas Copco Holyoke Inc |
| Status | ACTIVE |
| Connection Style | PLAIN (TUBE) SECOND END |
| Connection Style | PLAIN (TUBE) FIRST END |
| Nominal Overall Length | 2.250 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Nominal Outside Diameter Tube Accommodated | 0.625 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES FIRST END IN |
| Media for Which Designed | OIL SINGLE RESPONSE |
| Thread Class | 2A SECOND END A |
| Thread Class | 2A FIRST END A |
| Material | STEEL 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 |
|---|---|
| CON-400 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| CON-400 | Atlas Copco Holyoke Inc (USA) |
| CON00400 PRIMARY | Atlas Copco Holyoke Inc (USA) |
| Reference | Meaning |
|---|---|
| CON-400 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| CON-400 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-289-5508 is a Reducer,tube, manufactured by Atlas Copco Holyoke Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-289-5508 has 3 manufacturer part numbers on file: CON-400 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), CON-400 (Atlas Copco Holyoke Inc), CON00400 (Atlas Copco Holyoke Inc).
Key specifications for CON00400: Connection Style: PLAIN (TUBE) SECOND END; Connection Style: PLAIN (TUBE) FIRST END; Nominal Overall Length: 2.250 INCHES IN; Connection Type: THREADED EXTERNAL TUBE FIRST 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.