The Bolt,machine, cataloged under National Stock Number 5306-00-145-6992, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-145-6992 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.453 INCHES MINIMUM AND 0.485 INCHES MAXIMUM IN |
| Fastener Length | 2.172 INCHES MINIMUM AND 2.219 INCHES MAXIMUM IN |
| Thread Length | 1.219 INCHES MINIMUM AND 1.297 INCHES MAXIMUM IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.875 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Grip Length | 0.922 INCHES MINIMUM AND 0.953 INCHES MAXIMUM IN |
| Width Between Flats | 1.240 INCHES MINIMUM AND 1.253 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 14 |
| Material | STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.906 INCHES MINIMUM AND 1.938 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 |
|---|---|
| AN14-20 | 2/2 Government specification standardization U.S. Government activity |
NSN 5306-00-145-6992 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-145-6992: Head Height: 0.453 INCHES MINIMUM AND 0.485 INCHES MAXIMUM IN; Fastener Length: 2.172 INCHES MINIMUM AND 2.219 INCHES MAXIMUM IN; Thread Length: 1.219 INCHES MINIMUM AND 1.297 INCHES MAXIMUM IN; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL. 16 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.