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AN4C6A
Aeronautical Standard Machine Bolt
Description
Airframe Bolt
Specifications
| Country of Origin | USA |
|---|---|
| Fastener Length | 0.781 |
| Features Provided | Finished head |
| Grip Length | 0.312 |
| Head Height | 0.140 inches minimum and 0.172 inches maximum |
| Head Style | Hexagon Head |
| Length | 3/4 |
| Material | Steel |
| Material Specification | Qq-s-770 fed spec single material response |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| NIIN | 00-156-2338 |
| NSN | 5306-00-156-2338 |
| Surface Treatment | Passivate |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.469 inches minimum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
| Thread Size | 1/4 |
| Weight | 0.02 lb |
| Width Between Flats | 0.428 inches minimum and 0.440 inches maximum |
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Catalog data updated 2026-07-05. Report a data error