Stainless Steel Hex Socket Screw 

Judge stainless steel hexagon in the end is what material, one has a few methods the first is to use the naked eye, this needs to have rich screw technicians or sales staff but with the naked eye to see stainless steel hexagon screw is what material, generally there will be error, that is to say, not quite the second kind is to test with liquid medicine The test stainless steel what material potion point a few drops in stainless steel hex screws, if will become discolored, will become red, is stainless steel SUS201 hex screws, if not discolored is stainless steel SUS304 screws above grade Product Name: Stainless Steel Hex Socket Screw Size: M1.6-M52 Material: SS304, SS316, SS316L, SS2205, SS660, S32750 Duplex stainless steel, carbon steel, Brass, Aluminum Standard: GB, DIN, ISO, DIN, ANSI, JIS, BS and Non-standard Surface: Passivate, Zinc, Black Oxide, Powder coating, Zinc-Nickel, Geomet, Dacromet Class Grade: 304,316,2205,660,4.8,8.8,10.9,12.9…