... your requirement! and have some stock we can make the Wire Thread Insert as your requirement!We supply the bolts, screws, nuts ... materials. For finishing, we provide black oxide, zinc electroplating Cr+3, phosphate, mechanical galvanization, hot dip galvanization, Dacromet and other kinds ... .9, 12.9, A2-50, A2-70 and A4-70etc Wire Thread Insert