bolts › machine bolts
AN3H31A
Aeronautical Standard Machine Bolt
Description
Fastener Length: 3-1/8", Hole Diameter: 1/32", Thread: 10-32, Thread Length: 3/8", AN3 series bolt
Specifications
| Fastener Length | 3.156 |
|---|---|
| Features Provided | Finished head |
| Grip Length | 2.750 |
| 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 |
| Hole Configuration Style | Hexagon flats |
| Hole Diameter | 0.046 |
| Hole Quantity | 1 |
| Hole Type | Drilled |
| Length | 3 1/8 |
| Material | Steel |
| Material Specification | Mil-b-6812 mil spec all material responses |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| 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 |
| Width Between Flats | 0.365 inches minimum and 0.377 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for AN3H31A. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error