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AN3-44
Aeronautical Standard Machine Bolt
Description
Airframe Bolt
Specifications
| Country of Origin | USA |
|---|---|
| Distance From Head Largest Bearing Surface To Shank Hole Center | 4.391 inches nominal first hole |
| Drilling | Drilled Head |
| Fastener Length | 4.531 |
| Features Provided | Finished head |
| Grip | 4 1/8 in |
| Grip Length | 4 1/8, 4.125 |
| Hardness Rating | 26.0 rockwell c minimum and 32.0 rockwell c maximum |
| Head Height | 0.109 inches minimum and 0.141 inches maximum |
| Head Style | Hexagon Head |
| Industry Standards/Certification | AN3 |
| Length | 4 1/2, 4 17/32 in |
| Material | Steel |
| Material Specification | Mil-b-6812 mil spec all material responses |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| NIIN | 00-144-3677 |
| NSN | 5306-00-144-3677 |
| Nominal Length | 4 17/32 |
| Shank Unthreaded Hole Diameter | 0.070 inches nominal first hole |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,ty 2,cl 3 fed spec all treatment responses |
| Thread Class | 3a |
| Thread Diameter | 0.190 |
| Thread Direction | Right-hand |
| Thread Length | 0.406 inches minimum |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNF |
| Thread Size | 10-32 |
| Weight | .005 lb |
| Width Between Flats | 0.365 inches minimum and 0.377 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for AN3-44. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error