These are fully threaded hex cap screws (i

towers and other commercial structures

7/8-9 x 6 Grade 5 Hex Cap Screw Zinc Plated

brick or stone

1/4-20 x 2 Combo Flat Sleeve Anchor Zinc Plated (100)

9/64 Heavy Duty Jobber Drill Bit (12) Drop-In Anchors 303 Stainless Steel These are fully threaded hex9 64 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.