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AN4H42
Aeronautical Standard Machine Bolt
Description
Fastener Length: 4-1/4", Hole Diameter: 1/32", Thread: 1/4-28, Thread Length: 15/32
Specifications
| Distance From Head Largest Bearing Surface To Shank Hole Center | 4.124 inches first hole |
|---|---|
| Fastener Length | 4.281 |
| Features Provided | Finished head |
| Grip Length | 3.812 |
| Hardness Rating | 26.0 rockwell c and 32.0 rockwell c |
| Head Height | Between 0.140 inches and 0.172 inches |
| Head Style | Hexagon Head |
| Hole Configuration Style | Hexagon flats |
| Hole Diameter | 0.046 |
| Hole Quantity | 1 |
| Hole Type | Drilled |
| Material | Steel |
| Material Specification | Mil-b-6812 military specification all material responses |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| Shank Unthreaded Hole Diameter | 0.076 inches first hole |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Class 3 federal specification single treatment response ty2 qq-p-416 |
| 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 AN4H42. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error