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AN8-20A
Aeronautical Standard Machine Bolt
Description
Airframe Bolt
Specifications
| Country of Origin | USA |
|---|---|
| Drilling | Undrilled Head |
| Fastener Length | Between 2.078 inches and 2.125 inches |
| Features Provided | Finished head |
| Grip | 1 5/16 in |
| Grip Length | 1 5/16, Between 1.296 inches and 1.328 inches |
| Hardness Rating | 26.0 rockwell c and 32.0 rockwell c |
| Head Height | Between 0.265 inches and 0.297 inches |
| Head Style | Hexagon Head |
| Head Type | Hexagon |
| Industry Standards/Certification | AN8 |
| Length | 2 3/32 in |
| Material | Steel |
| Material Specification | Mil-b-6812 military specification all material responses |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| NIIN | 00-638-8397 |
| NSN | 5306-00-638-8397 |
| Nominal Length | 2 3/32 |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Cl 3 federal specification all treatment responses type 2 qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.500 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.750 inches and 0.829 inches |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 1/2-20 |
| Weight | .005 lb |
| Width Between Flats | Between 0.740 inches and 0.752 inches |
Cross-reference
No interchangeable or dimensionally similar parts are on record for AN8-20A. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error