... .1,Gr.2,BS 4,6,8,10,12 Nylon Insert Nut1:We produce nuts according to UIC, GOST, GB/TB, DIN, BS ... -3/8;M10 to M48;4:Material: Carbon steel or stainless steel, Q195, Q235, 35#, 45#, 35CrMo, 42CrMo, 40Cr etc.5 ... America, West Europe, North Europe, Middle Asia, Southeast of Asia. Nylon Insert Nuts