Product Name: Computer Case Screws; Material: Carbon Steel; Weight: 150g Overall Size: 14 x 9mm/0.55" x 0.35"(L*Max.D) Main Color: Black; Thread Size: M3.5(6 #-32) x 6mm/1.4" x 2.4"(D*L) Size: 4mm/0.16"; Pitch: 0.8mm Head Size: 9 x 5mm/0.35" x 0.2"(D*T); Step Size: 6 x 2.5mm/0.24" x 0.1"(D*T) Features: The Length of these Screws are 14mm, Thread length is 5mm and Head Diameter is 9mm. The Screws can either by taken off and put on my hand using the thumb grip or you can use the appropriate screwdriver. These quality crafted thumb screws provide quick installation for securing cases and can easily be tightened by hand without much force. These thumb screws are an ideal replacement for the outer case screws. This makes it a lot easier to remove the sides without the need for a screwdriver. Package Content: 50(+/-2%)pcs x Computer Case Thumb Screws; Note:Light 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 +/-1-3 cm.