The Bolt,machine, cataloged under National Stock Number 5306-01-685-2665, 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14 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-685-2665 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN |
| Fastener Length | 1.437 INCHES MINIMUM AND 1.484 INCHES MAXIMUM IN |
| Thread Length | 0.812 INCHES MINIMUM AND 0.859 INCHES MAXIMUM IN |
| Material Document and Classification | IL-B-7874 MIL SPEC 10TH MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN |
| Width Between Flats | 0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| Grip Diameter | 0.495 INCHES MINIMUM AND 0.499 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| NAS20038-5 | 5/9 Secondary reference U.S. Government activity |
| MS20038-5 | 3/2 Design control — primary reference U.S. Government activity |
| NASM7874 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5306-01-685-2665 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-685-2665: Head Height: 0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM IN; Fastener Length: 1.437 INCHES MINIMUM AND 1.484 INCHES MAXIMUM IN; Thread Length: 0.812 INCHES MINIMUM AND 0.859 INCHES MAXIMUM IN; Material Document and Classification: IL-B-7874 MIL SPEC 10TH MATERIAL RESPONSE OVERALL. 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.