round head split anchor

5/8-11 x 10 A307 Grade A Carriage Bolt Zinc Plated

They install quickly

ASTM F837-91 Group 1 Condition CW

(A10™) 3/8 ALLIGATOR® Flush Mount Anchor Nylon (50)

1/4 Heavy Duty Jobber Drill Bit (12) Nylon Insert Locknuts Zinc Plated round head split anchor1 4 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.