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AN5-20
Aeronautical Standard Machine Bolt
Description
Airframe Bolt; Drilled
Specifications
| Country of Origin | USA |
|---|---|
| Drilling | Drilled Head |
| Fastener Length | 2.093 |
| Grip | 1 9/16 in |
| Grip Length | 1 9/16 |
| Head Height | Between 0.122 inches and 0.204 inches |
| Head Style | Hexagon Head |
| Industry Standards/Certification | AN5 |
| Length | 2 3/32 in |
| NIIN | 01-382-3781 |
| NSN | 5306-01-382-3781 |
| Nominal Length | 2 3/32 |
| Shank Unthreaded Hole Diameter | 0.076 inches first hole |
| Thread Class | 3a |
| Thread Diameter | 0.312 |
| Thread Direction | Right-hand |
| Thread Length | 0.531 |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 1/4, 5/16-24 |
| Weight | 0.05 lb |
| Width Between Flats | Between 0.490 inches and 0.502 inches |
Cross-reference
No interchangeable or dimensionally similar parts are on record for AN5-20. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error