Specification:
Material: Zinc plated steel
System of Measurement: Imperial
Head Type: Large Flange Head
Size: 5/16"-18
Thread per Inch: 18
Body Type: Round Splined Open
Grip Range: 0.027-0.150 inch (0.68-3.8mm)
Hole Size: 0.5312 inch (11.938mm)
Cloest Size in mm: M8