The Bolt,machine, cataloged under National Stock Number 5306-01-079-5129, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-079-5129 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Head Height | 0.219 INCHES NOMINAL IN |
| Fastener Length | 1.625 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | DPS 9.74 TY 2 FSCM 88277 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Distance From Centerline to Flat | 0.279 INCHES MINIMUM AND 0.284 INCHES MAXIMUM IN |
| Thread Length | 0.337 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.099 INCHES MINIMUM AND 0.106 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | MIL-S-5626 COND C4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | DEE CHAMFER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.188 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 4140 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.406 INCHES NOMINAL FIRST HOLE IN |
| Head Diameter | 0.875 INCHES NOMINAL 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 |
|---|---|
| 4943129-501 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-079-5129 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-079-5129: Surface Finish: 32.0 MICROINCHES GRIP; Head Height: 0.219 INCHES NOMINAL IN; Fastener Length: 1.625 INCHES NOMINAL IN; Surface Treatment Document and Classification: DPS 9.74 TY 2 FSCM 88277 MFR REF SINGLE TREATMENT RESPONSE OVERALL. 21 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.