3/8 Cobalt Heavy Duty Jobber Drill Bit

Socket Cap Screws in 18-8 (A2) Stainless Steel by Brighton Best

3/4-10 Cap Nut Nickel

Hardness of RC 38-43

5/32 Cobalt Heavy Duty Jobber Drill Bit

#54 Heavy Duty Jobber Drill Bit (12) 1/2 Hex Lag Screws Hot Dipped Galvanized 3/8 Cobalt Heavy Duty Jobber#54 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.