#55 Heavy Duty Drill Bit - Stubby Length

brick or stone

21/64 Cobalt Heavy Duty Jobber Drill Bit

7/8-9 x 3 Hex Cap Screw SS 18-8 (A2)

3 USS Flat Washer Zinc Plated

9/16-18 x 3 Hex Cap Screw SS 18-8 (A2) 3/4-10 Flat Socket Cap Screws Alloy #55 Heavy Duty Drill Bit9 16 18 x 3 Hex Cap Screw SS 18 8 (A2) . 18 8 stainless steel hex cap screws will have a typical composition of 18% chromium and 8% nickel. These percentages exist in 303, 304 and 305 series stainless steels so 18 8 is used at times to designate any and all of those alloy groups. 18 8 stainless steel offers good corrosion resistance and machines easily but will over time stain in coastal environments. They are also acceptable for use in ACQ pressure