product:titanium hexagon socket screw meterial:TA1,TA2,TC4,ect standard:ISO4762 size:M6*20 Bolt specification table: The UN standard of the thread for the bolt: Notice:please give us the specification of the bolt and the thread,the we will offer you the quote.example:the specification of the bolt:M1.6*15,M2*16,ECT.the specification of the thread:UNF0-80,UNC1-64,ECT.