Machine Bolt - AN4-4
Aeronautical Standard
Description: Machine Bolt
Part Number: AN4-4
Product Overview
Length: 17/32", grip: 1/16", thread: 1/4-28, cadmium plated steel, drilled shank, AN4 series bolt, Wrench Size: 7/16 inch
Features and Specification
| Distance From Head Largest Bearing Surface To Shank Hole Center | : | 0.374 inches first hole |
| Fastener Length | : | 0.531 inches |
| Features Provided | : | Finished head |
| Grip Length | : | 0.062 inches |
| Hardness Rating | : | 26.0 rockwell c and 32.0 rockwell c |
| Head Height | : | Between 0.140 inches and 0.172 inches |
| Head Style | : | Hexagon |
| Material | : | Steel comp 4037 or steel comp 4130 or steel comp 8630 or steel comp 8735 or steel comp 8740 or steel comp 4140 |
| Material Specification | : | Mil-b-6812 military specification all material responses |
| Min. Tensile Strength (psi) | : | 125000 pounds per square inch |
| Thread Diameter | : | 0.250 inches |
| Shank Unthreaded Hole Diameter | : | 0.076 inches first hole |
| Surface Treatment | : | Cadmium and chromate |
| Surface Treatment Specification | : | Qq-p-416 type 2 class 3 federal specification single treatment response |
| Thread Class | : | 3a |
| Thread Direction | : | Right-hand |
| Thread Length | : | 0.469 inches |
| Thread Qty Per Inch (tpi) | : | 28 |
| Thread Series Designator | : | Unf (fine thread) |
| Width Between Flats | : | Between 0.428 inches and 0.440 inches |
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