The Coupling,tube, cataloged under National Stock Number 4730-01-178-9441, 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 11 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-178-9441 |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | PLAIN (TUBE) ALL ENDS |
| Tubing Wall Nominal Thickness for Which Designed | 0.058 INCHES SECOND END IN |
| Tubing Wall Nominal Thickness for Which Designed | 0.072 INCHES FIRST END IN |
| Nominal Overall Length | 1.800 INCHES IN |
| Connection Type | UNTHREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | PLAIN |
| Nominal Outside Diameter Tube Accommodated | 1.125 INCHES ALL ENDS IN |
| Surface Treatment | OXIDE OUTSIDE |
| Media for Which Designed | FUEL FIRST RESPONSE |
| Media for Which Designed | FLUID SINGLE RESPONSE |
| 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 |
| Reference | Meaning |
|---|---|
| 16107928 | C/1 Advisory reference — outside the item-of-supply concept Colt Industries Inc Power Systems Div |
| ADH5434A | 3/9 Design control — primary reference U.S. Government activity |
| 16107928 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| ADH5434A | C/1 Advisory reference — outside the item-of-supply concept Fairbanks Morse, Llc |
NSN 4730-01-178-9441 is a Coupling,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-178-9441: Connection Style: PLAIN (TUBE) ALL ENDS; Tubing Wall Nominal Thickness for Which Designed: 0.058 INCHES SECOND END IN; Tubing Wall Nominal Thickness for Which Designed: 0.072 INCHES FIRST END IN; Nominal Overall Length: 1.800 INCHES IN. 11 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.