1/2-13 x 7 Hex Cap Screw SS 18-8 (A2)

7/16 Cobalt Heavy Duty Jobber Drill Bit

deformation-controlled expansion anchors with a preassembled expander plug

3/4-10 x 13 A307 Grade A Carriage Bolt HDG

#30 Heavy Duty Jobber Drill Bit (12) Acorn Sleeve Anchors Zinc Plated 1/2-13 x 7 Hex Cap#30 Heavy Duty Jobber Drill Bit . Web construction is heavier than general purpose construction making it particularly suitable for cotter pin hole drilling and cross hole drilling in head of bolts. The heavy construction affords efficient drilling in stainless steel and other hard materials. The split point reduces the thrust requirements and minimizes walking.