Aeronautical Standards Group - Machine Bolt - AN5-12
Genuine OEM Part
Description: Machine Bolt
Part Number: AN5-12
Alternate Part Numbers: 382-32
Product Overview
An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inches (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inches (0.038 mm) or less, bolt, and shear. See also screw, cap, hexagon head and screw, machine.
Item Specification:
| Thread Class | : | 3A | |
| Thread Direction | : | Right-hand | |
| Thread Length | : | 0.500" Inches Minimum and 0.578" inches Maximum | |
| Fastener Length | : | 1.328" Inches minimum and 1.375" Inches Maximum | |
| Head Style | : | Hexagon | |
| Head Height | : | 0.172" Inches Minimum and 0.204" Inches Maximum | |
| Width Between Flats | : | 0.490 Inches Minimum and 0.502" Inches Maximum | |
| Shank Unthreaded Hole Diameter | : | 0.076" Inches Minimum first hole and 0.086" Inches Maximum First Hole | |
| Nominal Thread Diameter | : | 0.312" Inches | |
| Grip Length | : | 0.797" Inches Minimum and 0.828" Inches Minimum | |
| Features Provided | : | Finished Head | |
| Thread Quantity per Inch | : | 24" | |
| Minimum Tensile Strength | : | 125000 pounds per square inch | |
| Hardness Rating | : | 26.0 Rockwell C minimum overall and 32.0 Rockwell C maximum overall | |
| Distance from Head Largest Bearing Surface to Shank Hole Center | : | 1.156" Inches Minimum first hole and 1.188" Inches Maximum first hole | |
| Material | : | Steel comp 4140 overall or steel comp 8740 overall or steel comp 8630 overall or steel comp 8735 overall or steel comp 4130 overall or steel comp 4037 overall | |
| Surface Treatment Document and Classification | : | QQ-P-416, type 2, class 3 fed spec all treatment responses overall | |
| Thread Series Designator | : | UNF |
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