Hardness for plain and zinc plated washers is HRC 38-45 and HRC 26-45 for hot-dip galvanized washers per ASTM F436

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

Lengths over 6 to 12 inches will have 6 inches of thread

1 1/8-7 x 12 Socket Cap Screw Alloy

1 1/8-7 Finished Hex Nut SS 316 (A4) Gutter Screws Hardness for plain and zinc1 1 8 7 Finished Hex Nut SS 316 (A4) . Finished Hex Nuts in 316 stainless steel are for use with stainless steel bolts or screws with a specified minimum tensile strength equal or less than the specified proof stress of the mating nut. 316 stainless steel differs from 18 8 by it's molybdenum content (2 3%) and a higher nickel content (10 14%). This gives 316 stainless steel a higher degree of corrosion resistance and superior strength at raised