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: 304 Stainless SteelThread: M3Thread Pitch: 0.5mm/0.016"Stud length: 4mm/0.16"Screw length: 4mm/0.16"Overall Size: 8mm x 4.9mm/0.31" x 0.19" (L*W)Packing List:20pcs 4mm+4mm StandoffsAdvantageThe standoff screws are made of stainless steel, 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.