The Union,tube, cataloged under National Stock Number 4730-01-732-5000, 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 Swagelok Co. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-732-5000 |
| Primary Part Number | T400-7-0023 |
| Item Name | Union,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Nominal Width Across Flats | 0.750 INCHES CENTER BULKHEAD IN |
| Nominal Width Across Flats | 0.562 INCHES FIRST END IN |
| Connection Style | SWIVEL NUT, FLARELESS (SWIVEL NUT ATTACHMENT METHOD OPTIONAL) (TUBE) FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Nominal Outside Diameter Tube Accommodated | 0.25 INCHES FIRST END IN |
| Nominal Thread Size | 0.5625 INCHES SECOND END IN |
| Thread Class | 3B SECOND END |
| Thread Quantity Per Inch | 18 SECOND END |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) SECOND END |
| 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 |
|---|---|
| T400-7-0023 PRIMARY | Swagelok Co (USA) |
| GA500U4-6T | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| GA500U | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
NSN 4730-01-732-5000 is a Union,tube, manufactured by Swagelok Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-732-5000 has 2 manufacturer part numbers on file: T400-7-0023 (Swagelok Co), GA500U4-6T (Northrop Grumman Systems Corporation).
Key specifications for T400-7-0023: Nominal Width Across Flats: 0.750 INCHES CENTER BULKHEAD IN; Nominal Width Across Flats: 0.562 INCHES FIRST END IN; Connection Style: SWIVEL NUT, FLARELESS (SWIVEL NUT ATTACHMENT METHOD OPTIONAL) (TUBE) FIRST END; Connection Type: THREADED EXTERNAL TUBE SECOND END. 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.