Made of high quality 304 stainless steel. The 304 stainless steel material features strength and offers good corrosion resistance in bad environment like high temperature, cold weather, and high humidity areas. They have superior rust resistance and the excellent of oxidation resistance, which can ensure long time using. Stainless Steel Hex Socket Button Head Bolts Screws Nuts is an ideal tool for home and workplace, professionals, amateurs, landlords, handymen, repair men, woodworking, construction, plumbing, HVAC, 3D printed projects, communication equipments, ship assembly and so on. 0, Manufacturer: DollaTek