ITEM NAME:10pcs M5*20 Titanium Alloy Rustproof Cap Head Socket Screw Allen Key Bolts Description: Threads are the standard metric coarse(most common) Type: Hexagon Head Material: Titanium Alloy Usage: Fastening piece for mechanical industry Thread Diameter: Approx. 5mm Thread Length: Approx. 20mm Color: Silver Package Includes: 10x M5*20 Allen Head Screws Note: Since the size above is measured by hand, the size of the actual item you received could be slightly different from the size above. Meanwhile, please be reminded that due to lighting effects, monitor's brightness / contrast settings etc, there could be some slight differences in the color tone of the pictures and the actual item..10x M5 20 Allen Head Screws. Material: Titanium Alloy. Thread Length: Approx. Type: Hexagon Head.