Flat head machine screws 1,Products DetailesMaterial1.Stainless Steel: SS201, ... ,C1010,C1018,C1022,C1035K,C1045 8, Alloy steel: SCM435,10B21Specification& gaugeM0.8-M10Surface FinishingZn- Plated,Ni-plated ... ,ANSI,BSWManufacture ProcessHeading/washer assembly/Threading/Secondary machine/heat treatment/plating/Anti-slipping/Baking/QA/ ... 7,Customer Feedback and Evaluation 8,We are the best Choice for yr