Details： SPMD provice Hexagon Socket Head Cap Bolt,socket head hex bolt,hex-head-bolt,Connecting Bolt Hex Socket,hex head shoulder bolt,Allen Socket Head Bolt,hex head flange bolt,hex head plug with socket,Metric Socket Head Bolt,DIN 912 / ISO 4762 Stainless Socket Cap Screw. Price is cheper 10%-15% than our competitors in FCL order. Material: carbon steel, alloy steel, stainless steel. Plating: Black, white zine plating Diameter ability:M4-M100(1/4"-4") Length:6-300mm Property class: ISO 898:8.8-12.9,ASTM A574,A574M,F837,F837M High tension Grade:8.8, 12.9,14.9