The Bolt,machine, cataloged under National Stock Number 5306-01-042-7524, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-042-7524 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.600 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN |
| Fastener Length | 4.650 INCHES NOMINAL IN |
| Thread Length | 1.120 INCHES NOMINAL IN |
| Hardness Rating | 33.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.160 INCHES MINIMUM AND 0.180 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.970 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 4340 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 4.340 INCHES MINIMUM AND 4.370 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 |
|---|---|
| 26-9711-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-042-7524 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-042-7524: Head Height: 0.600 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN; Fastener Length: 4.650 INCHES NOMINAL IN; Thread Length: 1.120 INCHES NOMINAL IN; Hardness Rating: 33.0 ROCKWELL C MAXIMUM OVERALL. 15 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.