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

3/8 inch reduced shank with ground flute of M2 high speed steel

min-height: 12

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

61/64 x 6 Reduced Shank Drill Bit Cobalt (1/2 Shank) Star Flat Decking Screws Yellow Zinc Plated 3/4-10 x 6 1/2 Grade61 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.