Material: Made of 304 stainless steel, it has antirust performance, high strength, corrosion resistance and can be used for a long timeSAE Size: This 62-piece hexagonal nut kit includes five different models of 1/4-20 5/16-18 3/8-16 #10-32 #10-24 to meet different needsSturdy and serviceable: It can replace the lock washer and prevent the lock nut from weakening and loosening under vibration and torque, and the force generated by the lock nut is far greater than that of the common nutWide application: The set has a wide range of uses and is suitable for DIY by repairmen, amateurs, landlords, etc.Package: You will get 62Pcs 304 stainless steel lock nut combination kit, including #10-32(10 pieces), #10-24(10 pieces), 1/4-20(30 pieces), 5/16-18(8 pieces) and 3/8-16(4 pieces), all the hexagonal nuts are packed in one box for easy storage