Made from iron plating. The carbon steel material offers strength, wear resistance, and corrosion resistance in harsh environments like high temperatures, cold weather, and high humidity. Durable and nickel-plated surface ensures protection against environmental damage and rust. Superior rust and oxidation resistance guarantee their longevity. EASY TO INSTALL: Cage nuts and screws conform to the standardized metric system. The average error is less than 0.01mm. The screw thread is sharp, clean, and precise without burrs. The accurate size simplifies installation or repair, ensuring a perfect fit for your cages. PACKAGE INCLUDES: Meets your diverse needs. An excellent choice for both professionals and hobbyists. These versatile bolts and nuts are your essential tools. WIDE APPLICATION: Cage nuts and screws are universally compatible with all racks featuring square holes. Nuts and screws are ideal for mounting your rack server cabinets, server racks, A/V equipment enclosures, and more. HIGH-QUALITY CABINET CAGE NUTS AND SCREWS: Size: M6 x 20. Fits all server racks or cabinets with square holes. Color: Silver. Material: Metal. Package Contents: 50 * M6 Cage Nut. 50 * M6 * 20mm Screw. Only the above package content is included; other products are not. Note: Light shooting and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.