Diameters over 2 1/2 inches have a meet a minimum of 140

18-8 stainless steel hex tap bolts will have a typical composition of 18% chromium and 8% nickel

5/8-11 x 1 1/2 Socket Cap Screw 316 Stainless Steel

Hex nut with opposed slots cut into the top of the nut through the centers of the flats

15/64 Heavy Duty Jobber Drill Bit (12) 7/8-9 Grade 5 Hex Cap Screws Zinc Plated Diameters over 2 1/2 inches15 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.