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AN173-16
Aeronautical Standard Close Tolerance Bolt
Description
Close Tolerance Bolt
Specifications
| Country of Origin | USA |
|---|---|
| Distance From Head Largest Bearing Surface To Shank Hole Center | 1.625 inches minimum first hole and 1.656 inches maximum first hole |
| Drilling | Drilled Head |
| Fastener Length | 1.766 inches minimum and 1.812 inches maximum |
| Grip | 1 3/8 in |
| Grip Diameter | 0.1889 inches minimum and 0.1894 inches maximum |
| Grip Length | 1.359 inches minimum and 1.391 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 |
| Head Type | Hexagon |
| Industry Standards/Certification | AN173 |
| Length | 1 13/16, 1 25/32 in |
| Material | Steel |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| NIIN | 00-180-2745 |
| NSN | 5306-00-180-2745 |
| Shank Unthreaded Hole Diameter | 0.070 inches minimum first hole and 0.080 inches maximum first hole |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,ty 2,cl 3 fed spec all treatment responses |
| Thread Class | 3a |
| Thread Diameter | 0.190 |
| Thread Direction | Right-hand |
| Thread Length | 0.375 inches minimum and 0.453 inches maximum |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNF |
| Thread Size | 0.1900-32, 10 |
| Weight | 0.02 lb |
| Width Between Flats | 0.365 inches minimum and 0.377 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for AN173-16. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error