stud bolts 1.Bolt Size,M2-M100 2.Material,stainless steel,carbon ... Nickel plated,Black Oxide,Hdg astm a325 stainless steel hex bolts 1. Standard:DIN, ANSI, BSW, JSB ans ISO standard or ... :Carbon steel, Alloy steel, stainless steel or according require3. Grade: Metric standard: Grade 4.8, Grade6.8, Grade8.8, Grade10.9 ...