On diameters over 2 1/2 inches

1/4 x 1 1/4 Nailon™ Anchor Mushroom Zinc Plated (100)

This combination of features makes the 1 1/2-6 Grade 2 finished hex nut zinc plated an excellent choice for reliable fastening needs

000 psi is required

3/4 x 12 Hex Lag Screw Zinc Plated

#6 Heavy Duty Jobber Drill Bit (12) 7/8-9 Socket Cap Screws Alloy On diameters over 2 1/2#6 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.