In diameters 1/4 to 1 1/2 inches our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications

15/16 x 6 Reduced Shank Drill Bit (1/2 Shank)

1-8 x 2 3/4 Socket Cap Screw Alloy

1-8 x 1 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated

#17 Heavy Duty Jobber Drill Bit (12) Nylon Insert Locknuts Zinc Plated In diameters 1/4 to 1#17 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.