Bolt Drill Hole Sizes

Please use the following table as an outline for bolt hole drill size.

 

Twist Bolts Drill Hole Dia. Min. Drill Hole Depth
6mmx80mm 1/2” 3-1/2″
6mmx100mm 1/2″ 4″
6mmx150mm 1/2″ 6″
8mmx100mm 5/8″ 4″
8mmx150mm 5/8″ 6″
Solid Leg Bolt, (SLB’s)
10mmx100mm 1/2″ 4″
10mmx150mm 1/2″ 6″
12mmx100mm 9/16″ 4″
12mmx150mm 9/16″ 6″
Wedge Bolts
10mmx80mm 10mm 3-1/2″
10mmx100mm 10mm 4″