9/16-12 x 7 1/2 Socket Cap Screw Alloy

the hardness rating is HRC 24-35

1 1/4-12 x 4 Socket Cap Screw Alloy

1 3/4-5 x 5 Socket Cap Screw Alloy

3/4-16 x 5 Hex Cap Screw SS 18-8 (A2) Finished Hex Nuts 18-8 Stainless Steel 9/16-12 x 7 1/2 Socket3 4 16 x 5 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