The Nut,tube Coupling, cataloged under National Stock Number 4730-00-326-6076, 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 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-00-326-6076 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Length to Shoulder | 29.0 MILLIMETERS NOMINAL MM |
| Width Across Flats | 1.250 INCHES NOMINAL IN |
| Thread Series | M |
| Thread Pitch in Millimeters | 1.50 |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 22.0 MILLIMETERS MM |
| Nut Height | 36.0 MILLIMETERS NOMINAL MM |
| Nut Style | TUBE COUPLING |
| Thread Class | 2B |
| Material | STEEL COMP 1118 OVERALL |
| Fabrication Method | MACHINED |
| Smallest Inside Diameter | 13.9 MILLIMETERS NOMINAL MM |
| Nominal Tube Outside Diameter | 14.0 MILLIMETERS MM |
| 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 |
|---|---|
| WMU2103-1X | 5/9 Secondary reference Ambac International Corporation Div Ambac International |
| WMU2103-1X | 3/9 Design control — primary reference Haynes Corporation |
NSN 4730-00-326-6076 is a Nut,tube Coupling, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-326-6076: Length to Shoulder: 29.0 MILLIMETERS NOMINAL MM; Width Across Flats: 1.250 INCHES NOMINAL IN; Thread Series: M; Thread Pitch in Millimeters: 1.50. 13 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.