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AN179-33
Aeronautical Standard Bolt
Description
Fastener Length: 3-1/2", Thread: 1/2-18, Thread Length: 7/8"
Specifications
| Distance From Head Largest Bearing Surface To Shank Hole Center | 3.281 inches nominal first hole |
|---|---|
| Fastener Length | 3.531 |
| Grip Diameter | 0.5611 inches minimum and 0.5616 inches maximum |
| Grip Length | 2.625 |
| Hardness Rating | 26.0 rockwell c minimum and 32.0 rockwell c maximum |
| Head Height | 0.296 inches minimum and 0.328 inches maximum |
| Head Style | Hexagon Head |
| Length | 3 1/2 |
| Material | Steel |
| Material Specification | Mil-s-6049 mil spec 1st material response or mil-s-6050 mil spec 2nd material response or mil-s-6098 mil spec 3rd material response or mil-s-5626 mil spec 4th material response or mil-s-6758 mil spec 5th material response or ams 6300 assn std 6th material response |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| Shank Unthreaded Hole Diameter | 0.141 inches nominal first hole |
| Surface Finish | 63.0 microinches bearing surface of head, 63.0 microinches grip |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 type 2 class 3 fed spec all treatment responses |
| Thread Class | 3a |
| Thread Diameter | 0.562 |
| Thread Direction | Right-hand |
| Thread Length | 0.906 inches minimum |
| Thread Qty | 18 |
| Thread Qty Per Inch (tpi) | 18 |
| Thread Series Designator | UNF |
| Thread Size | 1/2 |
| Width Between Flats | 0.865 inches minimum and 0.877 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- AN179-33
- AN179-42
Cross-reference
No interchangeable or dimensionally similar parts are on record for AN179-33. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error