The M12 socket nut is made of carbon steel in zinc form, provides high strength and the zinc coating provides good corrosion resistance. The hexagonal shape has 6 sides that provide good granularity of angles for a tool to approach from. Give you a reliable and comfortable feeling of use. These hex nuts are perfect replacements for industrial and construction fasteners. M12*38-19mm, which can meet different needs. M12 socket nut can be used to mount bolts, studs or metal screws to fasten two parts together to make one piece. Hex nuts are widely used in the home and office appliance, communication equipment, ship assembly and other machinery industries. About Fafeicy Galvanized Long Shank Hex Nut Galvanized Long Shank Hex Nut (M12*50, Opposite Side 19mm), Pack of 5 Hex Sleeve Hex Sleeve Socket Nut #02 M12*38, 19mm, 276g/9.7oz Material Features Carbon steel material, provides high strength. Zinc plated, provides good corrosion resistance. Gives good granularity of angles for an approach tool. Offer reliable and comfortable using feeling. Galvanized lengthened hexagonal nut Applications The long nut is widely used in the home and office appliance, communication equipment, ship assembly and other machinery industries. The long nuts can be used to mount bolts, studs or machine screws to fasten two parts together to make one piece. Galvanized lengthened hexagonal nut 5 x Hex Nut (M12 * 38, opposite side 19 mm) Delivery quantity: 5 pieces Product color: stainless steel Product size: M12 * 38, 19 mm Note: Manual measurement, please allow 1-3 mm error.Yeuri