The Bolt,machine, cataloged under National Stock Number 5306-01-115-6557, 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17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-115-6557 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN |
| Fastener Length | 1.141 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN |
| Thread Length | 0.501 INCHES MINIMUM AND 0.577 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM FIRST HOLE IN |
| Nominal Thread Diameter | 0.563 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN |
| Width Between Flats | 0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| 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 | 1.266 INCHES MINIMUM AND 1.296 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 |
|---|---|
| AN9C10 | 2/2 Government specification standardization U.S. Government activity |
NSN 5306-01-115-6557 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-115-6557: Head Height: 0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN; Fastener Length: 1.141 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN; Thread Length: 0.501 INCHES MINIMUM AND 0.577 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.141 INCHES MINIMUM AND 0.151 INCHES MAXIMUM FIRST HOLE IN. 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.