The Bolt,machine, cataloged under National Stock Number 5306-01-657-2402, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-657-2402 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Inside Diameter | 0.684 INCHES MINIMUM IN |
| Head Height | 0.250 INCHES NOMINAL IN |
| Fastener Length | 1.933 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS 2700,METHOD 1 CLASS 4 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.745 INCHES NOMINAL IN |
| Material Document and Classification | AMS5731 NATIONAL STD SINGLE MATERIAL RESPONSE OR AMS5732 NATIONAL STD SINGLE MATERIAL RESPONSE OR AMS5737 NATIONAL STD SINGLE MATERIAL RESPONSE OR AMS5853 NATIONAL STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.4375 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.118 INCHES NOMINAL IN |
| Width Between Flats | 1.933 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20.0 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.790 INCHES NOMINAL 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 |
|---|---|
| NAS1007-19H | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-657-2402 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-657-2402: Head Inside Diameter: 0.684 INCHES MINIMUM IN; Head Height: 0.250 INCHES NOMINAL IN; Fastener Length: 1.933 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS 2700,METHOD 1 CLASS 4 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL. 17 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.