| Finish | : | Plain |
| Length | : | 5/8 in |
| Package QTY | : | 50 |
| Thread Size | : | 5/16-18 |
| Thread Type | : | UNC |
- Flange fasteners eliminate need for washers
- Meets IFI Standard IFI-115 and strength requirements of ASTM A574
- Tensile strength 170,000 PSI minimum
- Rockwell hardness - RC 37/43
- External drive provides tighter wrenching with more grip surface