Hex bolts with hex nuts 1,Products DetailesMaterial1.Stainless Steel: SS201, SS303, SS304, ... FinishingZn- Plated,Ni-plated,Passivated,Tin-plated,Sandblast and Anodize,Chromate, Polish,Electro Painting,Black Anodize,Plain, ... etc.Heat TreatmentTempering,Hardening,Spheroidizing,Stress Relieving.StandardISO,GB,DIN,JIS,ANSI,BSWManufacture ProcessHeading/washer assembly/Threading/Secondary machine/heat ...