3/4-10 x 4 Socket Cap Screw 18-8 (A2) Stainless Steel

3/4-16 x 5 Grade 5 Hex Cap Screw Zinc Plated

#13 Heavy Duty Jobber Drill Bit

They are available in high strength

1 7/16 x 6 Reduced Shank Drill Bit Cobalt (1/2 Shank)

7/16-14 x 3 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (300) 1/2 Hex Lag Screws 18-8 Stainless Steel 3/4-10 x 4 Socket Cap7 16 14 x 3 1 2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (300) . L9 High Tensile Strength Hex Cap Screws are designed for use in high stress, severe service environments. The highest mechanical strength off the shelf fastening system available, its special features control torque tension characteristics to develop high clamp loads when using properly controlled tightening methods. Brighton Best manufactures L9 bolting from AISI alloy steels.