4-4 A194 2H Heavy Hex Nut Plain

1/2 Heavy Duty Jobber Drill Bit

They’ll also withstand excessive and repeated weight bearing

19/64 Heavy Duty Jobber Drill Bit

1-8 x 4 Grade 8 Hex Cap Screw Yellow Zinc Plated

21/64 Heavy Duty Jobber Drill Bit (6) 3/4-10 Grade 5 Hex Cap Screws Zinc Plated 4-4 A194 2H Heavy Hex21 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.