Our standoff screws are widely used in computers, computer cases, circuit board assembly and other electronic fields. The PCB standoffs play a supporting, isolating and fastening role in the use.Specification Material: BrassThread: M3Thread Pitch: 0.5mmFemale-Male Thread Length: 20mm+6mmPacking List: 40 x Standoff Screws; 40 x NutsAdvantageThe standoff screws are made of brass, which is rust-free, durable, stable, and reusable compared with plastic.InstructionSpecially designed to keep PCB at a consistent height and prevent it from bending, twisting, and short-circuiting.NOTE: Please measure the required length of your project, and then select the appropriate standoffs to save your time and effort.