The Nipple,tube, cataloged under National Stock Number 4730-01-005-3261, 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 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-005-3261 |
| Item Name | Nipple,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | FLARELESS (TUBE) ALL ENDS |
| Nominal Overall Length | 2.219 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END BULKHEAD |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | FLARELESS W/ BULKHEAD THREADS |
| Material Document and Classification | SAE 72 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END BULKHEAD IN |
| Nominal Thread Size | 0.437 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.437 INCHES FIRST END BULKHEAD IN |
| Seat Angle | 12.0 DEGREES ALL ENDS |
| Thread Class | 3A FIRST END BULKHEAD A |
| Thread Class | 3A ALL ENDS A |
| Material | COPPER ALLOY 360 OVERALL |
| Thread Series Designator | UNF ALL ENDS |
| Thread Series Designator | UNF FIRST END BULKHEAD |
| 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 |
|---|---|
| 782FB1-4 | 3/9 Design control — primary reference Imperial |
NSN 4730-01-005-3261 is a Nipple,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-005-3261: Connection Style: FLARELESS (TUBE) ALL ENDS; Nominal Overall Length: 2.219 INCHES IN; Connection Type: THREADED EXTERNAL TUBE FIRST END BULKHEAD; Connection Type: THREADED EXTERNAL TUBE ALL ENDS. 16 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.