The Bolt,machine, cataloged under National Stock Number 5306-01-477-7839, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-477-7839 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.263 INCHES MINIMUM AND 0.299 INCHES MAXIMUM IN |
| Fastener Length | 3.2034 INCHES MINIMUM AND 3.2502 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5645 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5646 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.5000 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 2.172 INCHES MINIMUM AND 2.204 INCHES MAXIMUM IN |
| Width Between Flats | 0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| Grip Diameter | 0.710 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| NAS501-8-31A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-477-7839 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-477-7839: Head Height: 0.263 INCHES MINIMUM AND 0.299 INCHES MAXIMUM IN; Fastener Length: 3.2034 INCHES MINIMUM AND 3.2502 INCHES MAXIMUM IN; Material Document and Classification: AMS 5645 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5646 ASSN STD 2ND MATERIAL RESPONSE OVERALL; Nominal Thread Diameter: 0.5000 INCHES IN. 13 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.