The Locknut,tube Fitting, cataloged under National Stock Number 4730-00-142-3063, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-142-3063 |
| Primary Part Number | 7970542 |
| Item Name | Locknut,tube Fitting |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Width Across Flats | 1.625 INCHES NOMINAL IN |
| Packing Recess Diameter | 1.536 INCHES MINIMUM AND 1.546 INCHES MAXIMUM IN |
| Thread Series | UN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.312 INCHES IN |
| Nut Height | 0.438 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND ZINC OVERALL |
| Nut Style | TUBE FITTING LOCKNUT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Nominal Tube Outside Diameter | 1.000 INCHES IN |
| Packing Recess Depth | 0.049 INCHES MINIMUM AND 0.059 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7970542 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 7970542 | 3/9 Design control — primary reference Yorde Machine Products Co |
| 7970542 | 5/9 Secondary reference Esco Inc |
NSN 4730-00-142-3063 is a Locknut,tube Fitting, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-142-3063 has 1 manufacturer part number on file: 7970542 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7970542: Width Across Flats: 1.625 INCHES NOMINAL IN; Packing Recess Diameter: 1.536 INCHES MINIMUM AND 1.546 INCHES MAXIMUM IN; Thread Series: UN; Thread Direction: RIGHT-HAND. 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.