1.Material:10B21,SCM435, 45# steel 2.Size:M3-M64 3.MOQ: ... 3"(M3-M52) all is ok for us.3. Materials10B21, SCM435, 45# steel, S25C, S20C, or any other as per ... .Our products are as following:Bolts: hex bolts, heavy hex bolts, hex flange bolts, carriage bolts, stud bolts, eye bolts, U bolts, ... , K nuts, rivet nuts, cage nuts, lock nuts, hex nuts, hex flange nuts, wing nuts, weld nuts, square nuts, cap ...