The Coupling,tube, cataloged under National Stock Number 4730-01-426-2458, 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 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-426-2458 |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Surface Treatment Document and Classification | F-25.01 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | PLAIN (TUBE) ALL ENDS |
| Nominal Overall Length | 4.168 INCHES IN |
| Connection Type | UNTHREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | RIGID W/OFFSET WRENCHING FACILITY |
| Material Document and Classification | MIL-T-9047 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 1.000 INCHES ALL ENDS IN |
| Nominal Thread Size | 1.578 INCHES CENTER BULKHEAD IN |
| Thread Class | 3A CENTER BULKHEAD A |
| Thread Quantity Per Inch | 14 CENTER BULKHEAD |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNJS CENTER 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 |
|---|---|
| DAA3119D489 | D/9 Drawing number reference only U.S. Government activity |
| DAA3119D489-001 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-426-2458 is a Coupling,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-426-2458: Surface Treatment Document and Classification: F-25.01 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Connection Style: PLAIN (TUBE) ALL ENDS; Nominal Overall Length: 4.168 INCHES IN; Connection Type: UNTHREADED EXTERNAL TUBE ALL ENDS. 12 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.