The Bolt,machine, cataloged under National Stock Number 5306-00-685-1679, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-00-685-1679 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 250.0 MICROINCHES HEAD |
| Surface Finish | 250.0 MICROINCHES THREADS |
| Head Height | 0.190 INCHES NOMINAL IN |
| Fastener Length | 0.840 INCHES MINIMUM AND 0.860 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-C-320,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES NOMINAL FIRST HOLE IN |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.500 INCHES NOMINAL IN |
| Width Between Flats | 0.552 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| Surface Treatment | CHROMIUM OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 0.698 INCHES MINIMUM AND 0.730 INCHES MAXIMUM 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 |
|---|---|
| 23-3428-501 | 5/9 Secondary reference U.S. Government activity |
| 23-3428-501 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-685-1679 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-685-1679: Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 250.0 MICROINCHES HEAD; Surface Finish: 250.0 MICROINCHES THREADS; Head Height: 0.190 INCHES NOMINAL IN. 22 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.