Nuts have a work-hardened surface providing high-strength, load-bearing threads. Nut is exquisite in workmanship and clear in threads. All the rivet nut are made of carbon steel, with zinc plated on the surface, corrosion and acid resistant, they are strong and durable, you will no longer worry about them rusting and breaking when installing. Suitable for the fastening field of various metal plates and pipes and other manufacturing industries. Widely used in construction, automobile, and other household appliances and furniture products. Widely used in the assembly of electromechanical and light industrial products such as automobiles, elevators, switches, instruments, furniture, and decoration. All rivets are placed in a durable and sturdy box for storage to prevent loss, the box allows you to quickly find the type of rivet you need. Specification: Condition: 100% Brand New Item Type: Rivet Nut Product Model: M4/5/6/8/10, 1/4-20 Material: Galvanized Carbon Steel Color: As Pictures Shown Quantity: 200PCS Weight: Approx. 612g Package List: 62 x M4 Galvanized Vertical Grain Rivet Nut 50 x M5 Galvanized Vertical Grain Rivet Nut 40 x M6 Galvanized Vertical Grain Rivet Nut 10 x M8 Galvanized Vertical Grain Rivet Nut 8 x M10 Galvanized Vertical Grain Rivet Nut 30 x M1/4-20 Galvanized Vertical Grain Rivet Nut