the hardness rating is HRC 24-35

1/2 x 6 Titen HD Concrete Anchor Mech Galvanized (20)

5/8-11 x 5 Hex Cap Screw SS 316 (A4)

flat head split anchor

1 3/4-5 x 5 1/2 Socket Cap Screw Alloy

9/16-12 x 5 Hex Cap Screw SS 18-8 (A2) M24-3.00 Hex Cap Screws DIN 933 18-8 Stainless Steel (A2) the hardness rating is HRC9 16 12 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