- Hex Head Airframe Bolts come in either drilled or undrilled shank versions
- Threads are pressed into the steel, not cut, thus maintaining strength throughout the entire shank
- The surface under the head of AN bolts is designed to be a bearing surface to reduce non-uniform stress as the bolt is torqued thus reducing premature fatigue
| Type | Hex Head Airframe Bolt |
| Style | AN3 |
| Size | #10-32 |
| Length | 2-5/32" |
| Material | Steel |
| Dia. Max | 0.189 |
| Dia. Min | 0.186 |
| Head Style | Hex |
| Wrench Size | 3/8" |
| Shank Hole | 0.070 |
| Head Hole | None |
| Min Tensile Strength | 125,000 psi |
| Grip | 1-3/4 |
| Finish Spec | QQ-P-416, Type II, Grade/Class 3 |
| Compatible Washer | AN960-10 or AN970-3 |
| Compatible Nut | AN365-1032 |
| Fits Cotter Pin | AN380-2-2/MS24665-132 or longer |
| Thread Type | UNF-3A |
| Length | 0.406 |
| AN Part No. | AN3-21 |
