9/16-12 x 6 Hex Cap Screw SS 18-8 (A2)

or even if you’re just a do-it-yourself enthusiast

#38 Heavy Duty Jobber Drill Bit

1 1/2-6 Nylon Insert Locknut Zinc Plated

3/4-10 x 6 1/2 Grade 5 Hex Cap Screw Zinc Plated

61/64 x 6 Reduced Shank Drill Bit Cobalt (1/2 Shank) Star Flat Decking Screws Yellow Zinc Plated 9/16-12 x 6 Hex Cap61 64 x 6 Reduced Shank Drill Bit Cobalt (1 2 Shank) . Expands the size range capacity of a 1 2 inch portable drill chuck. Common flute and overall length for minimal adjustment during tool changes. Precision ground for high degree of concentricity between shank and body diameter. Ideal for drilling in low and medium tensile strength materials.