The Bolt,machine, cataloged under National Stock Number 5306-00-142-3751, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-142-3751 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 125.0 MICROINCHES HEAD |
| Surface Finish | 125.0 MICROINCHES THREADS |
| Head Height | 0.250 INCHES NOMINAL IN |
| Fastener Length | 3.076 INCHES NOMINAL IN |
| Thread Length | 0.576 INCHES MINIMUM IN |
| Shank Unthreaded Hole Diameter | 0.139 INCHES MINIMUM AND 0.145 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.500 INCHES NOMINAL IN |
| Width Between Flats | 0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 280000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP H11 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 2.946 INCHES NOMINAL FIRST HOLE IN |
| 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 |
|---|---|
| 4J13360-129A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-142-3751 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-142-3751: Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 125.0 MICROINCHES HEAD; Surface Finish: 125.0 MICROINCHES THREADS; Head Height: 0.250 INCHES NOMINAL IN. 20 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.