Grade 8 Hex Cap Screws are manufactured from medium carbon alloy steel

1/8 Cobalt Heavy Duty Jobber Drill Bit

1-8 x 3 1/4 Hex Cap Screw SS 18-8 (A2)

#44 Heavy Duty Jobber Drill Bit

1 1/2-6 x 13 Socket Cap Screw Alloy

7/8-9 x 6 1/2 Hex Cap Screw SS 18-8 (A2) 1-8 Grade 5 Hex Cap Screws Zinc Plated Grade 8 Hex Cap Screws7 8 9 x 6 1 2 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