1/2 x 6 Titen HD Concrete Anchor Zinc Plated (20)

split bolt anchor

3/4-10 x 2 Hex Tap Bolt 18-8 (A2) Stainless Steel

They are actually stronger than most metal and chemical anchors

#18 Heavy Duty Jobber Drill Bit (12) Lipped Drop-In Anchors Zinc Plated 1/2 x 6 Titen HD#18 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.