bolts › close tolerance bolts
AN176-13A
Aeronautical Standard Close Tolerance Bolt
Description
AN176 Bolt Close Tolerance
Specifications
| Country of Origin | USA |
|---|---|
| Dash | -13 |
| Drilling | Undrilled Head |
| Fastener Length | 1.543 |
| Grip | 13/16 in |
| Grip Diameter | Between 0.3737 inches and 0.3742 inches |
| Grip Length | 0.812, 13/16 |
| Hardness Rating | 26.0 rockwell c and 32.0 rockwell c |
| Head Height | Between 0.203 inches and 0.235 inches |
| Head Style | Hexagon Head |
| Head Type | Hexagon |
| Industry Standards/Certification | AN176 |
| Length | 1 29/64 in |
| Material | Steel |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| NIIN | 00-639-2361 |
| NSN | 5306-00-639-2361 |
| Nominal Length | 1 15/32 |
| Surface Finish | 63.0 microinches bearing surface of head, 63.0 microinches grip |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 ty2 cl3 federal specification single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.375 |
| Thread Direction | Right-hand |
| Thread Length | 0.641 |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 0.3750-24, 3/8 |
| Weight | .005 lb |
| Width Between Flats | Between 0.553 inches and 0.565 inches |
Cross-reference
No interchangeable or dimensionally similar parts are on record for AN176-13A. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error