Thread: M2; Pitch: 0.4mm; Female-Male Thread Length: 5mm+3mm, 10mm+3mm, 15mm+3mm, 20mm+3mm, 25mm+3mm, 30mm+3mm; Advantages: The bracket screws are made of brass, which is rust-free, , stable and reusable compared to plastic. Application: Our bracket screws are widely used in computers, computer cases, circuit board assembly, electronic fields, etc. Colour:gold Material:brass Note: Please measure the length required for your project and then choose the appropriate bracket to save your time and energy. Package Contents: 120 * hexagonal nut 120 * M2 hexagonal copper column (20 * 5MM+3MM, 20 * 10MM+3MM, 20 * 15MM+3MM, 20 * 20MM+3MM, 20 * 25MM+3MM, 20 * 30MM+3MM) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.