... A4-70,A4-80,Grade4.8,8.8,12.9 2.standard:ISO,GB,DIN,ANSI 3.Size:3/32- ... size and spec /OEM available Stock goods,free for samples.2.Packing: General packing: Plastic bags+cartons+pallet+containers3.The ... steel, heat-treated steel, low carbon martensite steel, austenitic stainless steel, martenitic stainless steel, iron, aluminium, brass, copper, bronze, plastic.Prompt goods, free for sample.Factory ...