1 3/4-5 x 16 Socket Cap Screw Alloy

1/2-13 x 9 Grade 5 Hex Cap Screw Zinc Plated

F436 flat washers are manufactured from carbon steel to meet or exceed ASTM F436

1/4-20 x 8 Socket Cap Screw Alloy

1-8 x 4 Hex Cap Screw SS 18-8 (A2) Stainless Steel Rivet / Steel Mandrel 1 3/4-5 x 16 Socket1 8 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