The Bolt,machine, cataloged under National Stock Number 5306-01-480-5239, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-480-5239 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.312 INCHES MAXIMUM IN |
| Fastener Length | 4.516 INCHES MINIMUM AND 4.562 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5645 ASSN STD 1ST MATERIAL RESPONSE AND AMS5646 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 4.0475 INCHES MINIMUM AND 4.0775 INCHES MAXIMUM IN |
| Width Between Flats | 0.426 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 3000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 347 OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| NAS501-4-44A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-480-5239 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-480-5239: Head Height: 0.312 INCHES MAXIMUM IN; Fastener Length: 4.516 INCHES MINIMUM AND 4.562 INCHES MAXIMUM IN; Material Document and Classification: AMS5645 ASSN STD 1ST MATERIAL RESPONSE AND AMS5646 ASSN STD 2ND MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.250 INCHES IN. 14 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.