The Union,tube, cataloged under National Stock Number 4730-01-678-7491, 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 Brennan Industries. Government technical data includes 13 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 | 4730-01-678-7491 |
| Primary Part Number | 3474-12-08-NWO |
| Item Name | Union,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Brennan Industries |
| Status | ACTIVE |
| Nominal Width Across Flats | 1.125 INCHES SECOND END IN |
| Nominal Width Across Flats | 1.125 INCHES FIRST END IN |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS SWIVEL) SECOND END |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS SWIVEL) FIRST END |
| Nominal Outside Diameter Hose Accommodated | 0.75 INCHES FIRST END IN |
| Nominal Outside Diameter Hose Accommodated | 0.50 INCHES SECOND END IN |
| Nominal Overall Length | 2.20 INCHES IN |
| Connection Type | THREADED EXTERNAL BOSS FIRST END |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Style Designator | CENTER WRENCHING FACILITY |
| Thread Quantity Per Inch | 16 SECOND END |
| Thread Quantity Per Inch | 16 FIRST END |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 3474-12-08-NWO PRIMARY | Brennan Industries (USA) |
NSN 4730-01-678-7491 is a Union,tube, manufactured by Brennan Industries, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-678-7491 has 1 manufacturer part number on file: 3474-12-08-NWO (Brennan Industries).
Key specifications for 3474-12-08-NWO: Nominal Width Across Flats: 1.125 INCHES SECOND END IN; Nominal Width Across Flats: 1.125 INCHES FIRST END IN; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS SWIVEL) SECOND END; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS SWIVEL) FIRST END. 13 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.