Description:HDD hard drive/disk shockproof mounting screws with shoulder for PC computer.Keep handy threaded screws commonly used to fasten hard drives, power supplies and expansion cards to the computer chassis.This pack mounting screws are handy for replacing or adding hard drives to your computer systems.Specification：Product Name: Hard Drive ScrewThread Size: 6#(3.5mm); Total Length: 5mm/0.2"; Color: Silver Tone; ; Material: MetalThread Type: UNCCoating: Nickel Plated; Drive Type: PhillipsFit for: 3.5" HDD; Thread Count: 32Package Content: 100(+/-2%)pcs x Hard Drive Screw.