The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-375-7674, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-375-7674 |
| Primary Part Number | 12387299-N04 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Lubrication | SOLUBLE LUBRICANT |
| Width Across Flats | 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Bearing Surface Finish | 125.0 MICROINCHES |
| Surface Treatment Document and Classification | MIL-STD-171 MIL STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNJC |
| Temp Rating | 250.0 FAHRENHEIT NOMINAL DEGF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.112 INCHES IN |
| Counterbore Diameter | 0.116 INCHES MINIMUM AND 0.156 INCHES MAXIMUM NUT IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.133 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Countersink Angle | 88.0 DEGREES NOMINAL NUT |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 40 |
| Material | STEEL OVERALL |
| Bearing Surface Type | CHAMFERED OR WASHER FACED |
| 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 |
|---|---|
| 12387299-N04 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5310-01-375-7674 is a Nut,self-Locking,hexagon, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-375-7674 has 1 manufacturer part number on file: 12387299-N04 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12387299-N04: Lubrication: SOLUBLE LUBRICANT; Width Across Flats: 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN; Bearing Surface Finish: 125.0 MICROINCHES; Surface Treatment Document and Classification: MIL-STD-171 MIL STD SINGLE TREATMENT RESPONSE OVERALL. 18 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.