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

Designed to be used with like-material machine screws and bolts

and their corrosion-resistant body will help to maintain long-term durability

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

1-8 x 3 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated

1-8 x 4 Hex Cap Screw SS 18-8 (A2) Stainless Steel Rivet / Steel Mandrel F436 flat washers are manufactured1 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