5/8-18 x 5 Grade 8 Hex Cap Screw Yellow Zinc Plated

7/8-9 x 6 Socket Cap Screw Alloy

9/16-18 x 5 Hex Cap Screw SS 18-8 (A2)

Low profile head diameter is twice the rivet body diameter

9/16-18 x 4 1/2 Hex Cap Screw SS 18-8 (A2) 9/16-12 Grade 8 Hex Cap Screws Yellow Zinc Plated 5/8-18 x 5 Grade 89 16 18 x 4 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