The nylon flange head adds stability in hollow surfaces

3/4-10 x 12 Grade 5 Hex Cap Screw Zinc Plated

1/2-13 x 12 Grade 5 Hex Cap Screw Zinc Plated

1-8 x 7 1/2 Socket Cap Screw Alloy

1/2 x 6 Titen HD Concrete Anchor Zinc Plated (20)

5/8-18 x 4 Hex Cap Screw SS 18-8 (A2) 1/2-13 Grade 5 Hex Cap Screws Zinc Plated The nylon flange head adds5 8 18 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