BOLT - AN5-4
Military Standard Aircraft Machine Bolt
Description: BOLT
Part number: AN5-4
Industry Standard Specification: AIA/NAS NASM3-20
Airframe Bolt, Drilled - Length: 19/32", Grip: 1/16", Thread: 5/16-24, Cadmium Plated Steel, Drilled Shank
AN5-4 FEATURES
| Parameter | Characteristics | |
| Thread Class | : | 3A |
| Thread Direction | : | Right-hand |
| Thread Length | : | 0.500 inches minimum and 0.578 inches maximum |
| Fastener Length | : | 0.578 inches minimum and 0.625 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 | : | 0.047 inches minimum and 0.078 inches maximum |
| 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 | : | 0.406 inches minimum first hole and 0.438 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 |
| Material Document and Classification | : | MIL-A5626 mil spec 1ST material response overall or MIL-S-6049 mil spec 2ND material response overall or MIL-S-6050 mil spec 3RD material response overall or MIL-S-6098 mil spec 4TH material response overall or MIL-S-6758 mil spec 5TH material response overall or AMS6300 assn std 6TH material response overall |
| Surface Treatment | : | Cadmium overall and chromate overall |
| Surface Treatment Document and Classification | : | QQ-P-416, type 2, class 3 fed spec all treatment responses overall |
| Thread Series Designator | : | UNF |
This part is used on the following aircraft:
- • Textron Aviation Beechcraft King Air 100 - all variants
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