The Bolt,machine, cataloged under National Stock Number 5306-01-375-7124, 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13 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-375-7124 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN |
| Fastener Length | 2.250 INCHES MINIMUM AND 2.297 INCHES MAXIMUM IN |
| Thread Length | 0.516 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.734 INCHES MINIMUM AND 1.766 INCHES MAXIMUM IN |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 5400 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 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 |
|---|---|
| MIL-B-7874 | 5/9 Secondary reference U.S. Government activity |
| MS20034-16 | 3/2 Design control — primary reference U.S. Government activity |
| MS20034-16 | 5/9 Secondary reference U.S. Government activity |
| NASM7874 | 3/1 Design control — primary reference U.S. Government activity |
| MIL-B-7874 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-375-7124 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-375-7124: Head Height: 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM IN; Fastener Length: 2.250 INCHES MINIMUM AND 2.297 INCHES MAXIMUM IN; Thread Length: 0.516 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 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.