The Reducer,tube, cataloged under National Stock Number 4730-00-595-1771, 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 Triumph Controls, Llc Dba Triumph Controls, Llc. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-595-1771 |
| Primary Part Number | B6375 |
| Item Name | Reducer,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Triumph Controls, Llc Dba Triumph Controls, Llc |
| Status | ACTIVE |
| Connection Style | FLARED (TUBE) SECOND END |
| Connection Style | FLARELESS (TUBE) FIRST END |
| Nominal Overall Length | 1.000 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Nominal Outside Diameter Tube Accommodated | 0.312 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES SECOND END IN |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Seat Angle | 45.0 DEGREES SECOND END |
| Seat Angle | 45.0 DEGREES FIRST END |
| Surface Treatment | ANODIZE INSIDE |
| Surface Treatment | ANODIZE OUTSIDE |
| Thread Class | 2A SECOND END A |
| Thread Class | 2A FIRST END A |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNF FIRST END |
| Thread Series Designator | UNF 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 |
|---|---|
| B6375 PRIMARY | Triumph Controls, Llc Dba Triumph Controls, Llc (USA) |
| Reference | Meaning |
|---|---|
| 4730H13-003 | 5/2 Secondary reference U.S. Government activity |
NSN 4730-00-595-1771 is a Reducer,tube, manufactured by Triumph Controls, Llc Dba Triumph Controls, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-595-1771 has 1 manufacturer part number on file: B6375 (Triumph Controls, Llc Dba Triumph Controls, Llc).
Key specifications for B6375: Connection Style: FLARED (TUBE) SECOND END; Connection Style: FLARELESS (TUBE) FIRST END; Nominal Overall Length: 1.000 INCHES IN; Connection Type: THREADED EXTERNAL TUBE FIRST END. 19 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.