The Union,tube, cataloged under National Stock Number 4730-01-145-6465, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-145-6465 |
| Item Name | Union,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 PREFORMED PACKING |
| Connection Style | SOCKET (TUBE) FIRST END |
| Union Joint Location | FIRST END AND SECOND END |
| Tubing Wall Nominal Thickness for Which Designed | 0.200 INCHES FIRST END IN |
| Nominal Overall Length | 4.870 INCHES IN |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST END |
| Material Document and Classification | QQ-S-763,CL 304,COND A FED SPEC SINGLE MATERIAL RESPONSE TAILPIECE |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | QQ-S-763,CL 304,COND A FED SPEC SINGLE MATERIAL RESPONSE THREAD PIECE |
| Nominal Outside Diameter Tube Accommodated | 1.900 INCHES FIRST END IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Seat Type | RECESSED |
| Material | NICKEL ALLOY NUT |
| Material | STEEL CORROSION RESISTING TAILPIECE |
| Material | STEEL CORROSION RESISTING THREAD PIECE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 2621-791-03ASSYA66MOD | 5/9 Secondary reference U.S. Government activity |
| 218088219 | 5/2 Secondary reference U.S. Government activity |
| 518-4682879 ITEMF30 | 3/2 Design control — primary reference U.S. Government activity |
| 518-4682879 ITE | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4730-01-145-6465 is a Union,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-145-6465: Furnished Items and Quantity: 1 PREFORMED PACKING; Connection Style: SOCKET (TUBE) FIRST END; Union Joint Location: FIRST END AND SECOND END; Tubing Wall Nominal Thickness for Which Designed: 0.200 INCHES FIRST END IN. 15 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.