The hot-dip galvanized hexagon screw is to place the bolt in the high-temperature zinc solution of 600 ℃ so that its surface is coated with a dark gray surface. The advantages of hot-dip galvanized hexagon screw are strong adhesion of zinc coating, thick coating and strong corrosion resistance. Hot dip galvanized bolts are used for outdoor power equipment and other occasions with high corrosion protection requirements. Generally, there are 4.8 grade outer hexagon bolts and 8.8 grade outer hexagon bolts and inner hexagon bolts.
If your hexagon head bolt is grade C, according to the standard, its single weight is about 0.0148 kg. According to the latest galvanizing standard, the galvanizing coefficient is 1.06, so its weight after galvanizing should be (theoretical): 0.015688 kg.
Zinc Plated A325M Bolts Commodity: Top quality customized A325M hex bolt Material: Carbon Steel, Alloy steel, stainless steel and brass Standard: DIN931/933, DIN 6914, A325/A325M Grade: 4.8/6.8/8.8/10.9/12.9 Surface Finish: Black,Zinc plated,Copper plating,Phosphating,Mechanical galvanized Zinc Plated A325M Bolts Size: M6-M164; 1/4″-2″ Supply Ability: 500 MT per month Certificated: ISO9001:2008;ROHS,SGS and environment protection Packing: By carton or gunny bag then […]