bolts › close tolerance bolts
AN173CH3A
Aeronautical Standard Close Tolerance Bolt
Description
Fastener Length: 1/2", Hole Diameter: 3/64", Thread: 10-32, Thread Length: 29/64"
Specifications
| Fastener Length | 0.453 inches minimum and 0.500 inches maximum |
|---|---|
| Grip Diameter | 0.1889 inches minimum and 0.1894 inches maximum |
| Grip Length | 0.046 inches minimum and 0.078 inches maximum |
| Hardness Rating | 26.0 rockwell c minimum and 32.0 rockwell c maximum |
| Head Height | 0.109 inches minimum and 0.141 inches maximum |
| Head Style | Hexagon Head |
| Hole Configuration Style | Hexagon flats |
| Hole Diameter | 0.046 inches minimum and 0.056 inches maximum |
| Hole Quantity | 1 |
| Hole Type | Drilled |
| Length | 1/2 |
| Material | Steel |
| Material Specification | Mil-s-18732 mil spec single material response |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| Surface Finish | 63.0 microinches bearing surface of head, 63.0 microinches grip |
| Surface Treatment | Passivate |
| Thread Class | 3a |
| Thread Diameter | 0.190 |
| Thread Direction | Right-hand |
| Thread Length | 0.375 inches minimum and 0.454 inches maximum |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNF |
| Thread Size | 10 |
| Width Between Flats | 0.365 inches minimum and 0.377 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for AN173CH3A. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error