socket SCREW 1.Screw Material:SS304,SS316, ROHS 2.Screw Finish:plain, phosphate 3.Screw style:SEMS SCREW ... DIN84,JIS, ISO ,BS,ANSI...ETC6)Environmental protectionROHS report are available, SGS test report 7)Inspection quality system100% Whole range inspectionB:Business ... test, torque test, salt spary endurance test, mechanical sizes test, ROHS report Mill test certification and etc as per your need.D ...