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

3/4-10 x 10 A307 Grade A Carriage Bolt Zinc Plated

5/8-11 x 9 Grade 8 Hex Cap Screw Yellow Zinc Plated

7/8-9 x 8 Grade 8 Hex Cap Screw Yellow Zinc Plated

5/8-11 x 4 Hex Cap Screw SS 18-8 (A2) 5/8-11 Grade 5 Hex Cap Screws Zinc Plated 5/8-11 x 5 Hex Cap5 8 11 x 4 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