bolts › machine bolts
AN4C32
Aeronautical Standard Machine Bolt
Description
Fastener Length: 3-5/16", Thread: 1/4-28, Thread Length: 15/32
Specifications
| Distance From Head Largest Bearing Surface To Shank Hole Center | 3.109 inches first hole and 3.141 inches first hole |
|---|---|
| Fastener Length | Between 3.265 inches and 3.312 inches |
| Features Provided | Finished head |
| Grip Length | Between 2.796 inches and 2.828 inches |
| Head Height | Between 0.140 inches and 0.172 inches |
| Head Style | Hexagon Head |
| Material | Steel |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| Shank Unthreaded Hole Diameter | 0.076 inches first hole and 0.086 inches first hole |
| Surface Treatment | Passivate |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.469 |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 1/4 |
| Width Between Flats | Between 0.428 inches and 0.440 inches |
Cross-reference
No interchangeable or dimensionally similar parts are on record for AN4C32. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error