bolts › machine bolts
ST3M571-8D46
Bolt
Description
Fastener Length: 3-21/32", Thread: 1/2-20, Thread Length: 25/32"
Specifications
| Distance From Head Largest Bearing Surface To Shank Hole Center | 3.381 inches minimum first hole and 3.421 inches maximum first hole |
|---|---|
| Extended Washer Diameter | 0.818 inches minimum and 0.828 inches maximum |
| Extended Washer Thickness | 0.113 inches minimum and 0.133 inches maximum |
| Fastener Length | 3.627 inches minimum and 3.657 inches maximum |
| Grip Diameter | 0.4990 inches minimum and 0.4995 inches maximum |
| Grip Length | 2.865 inches minimum and 2.885 inches maximum |
| Head Height | 0.494 inches minimum and 0.514 inches maximum |
| Head Style | Double hexagon w/hole |
| Length | 3 21/32 |
| Material | Steel |
| Min. Tensile Strength (psi) | 220000 pounds per square inch |
| Shank Unthreaded Hole Diameter | 0.106 inches minimum first hole and 0.111 inches maximum first hole |
| Surface Treatment | Passivate |
| Thread Class | 3a |
| Thread Diameter | 0.500 |
| Thread Direction | Right-hand |
| Thread Length | 0.742 inches minimum and 0.792 inches maximum |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series Designator | UNJF |
| Thread Size | 1/2 |
| Width Between Flats | 0.553 inches minimum and 0.564 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for ST3M571-8D46. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error