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AN8-44
Aeronautical Standard Machine Bolt
Description
Airframe Bolt
Specifications
| Country of Origin | USA |
|---|---|
| Distance From Head Largest Bearing Surface To Shank Hole Center | 4.406 inches minimum first hole and 4.438 inches maximum first hole |
| Drilling | Drilled Head |
| Fastener Length | 4.578 inches minimum and 4.625 inches maximum |
| Features Provided | Finished head |
| Grip | 3 13/16 in |
| Grip Length | 3 13/16, 3.886 inches minimum and 3.928 inches maximum |
| Hardness Rating | 26.0 rockwell c minimum and 32.0 rockwell c maximum |
| Head Height | 0.265 inches minimum and 0.297 inches maximum |
| Head Style | Hexagon Head |
| Head Type | Hexagon |
| Industry Standards/Certification | AN8 |
| Length | 4 19/32 in, 4 5/8 |
| Material | Steel |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| NIIN | 00-151-0162 |
| NSN | 5306-00-151-0162 |
| Nominal Length | 4 19/32 |
| Shank Unthreaded Hole Diameter | 0.106 inches minimum first hole and 0.116 inches maximum first hole |
| Surface Treatment | Cadmium or dichromate |
| Thread Class | 3a |
| Thread Diameter | 0.500 |
| Thread Direction | Right-hand |
| Thread Length | 0.681 inches minimum |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series Designator | UNF |
| Thread Size | 1/2-20 |
| Weight | 0.285 lb |
| Width Between Flats | 0.740 inches minimum and 0.752 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for AN8-44. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error