NGe M8x60mm Button Head Socket Cap Screws,Alloy Steel, Fully Threaded,Allen Hex Drive(M8X60,20Pcs)

M8x60mm Black Alloy Steel Button Head Socket Cap Screws, Commonly referred to as allen bolts, button heads, or socket head screws, Domed head with a flat bottom that protrudes above the installation surface, Head diameter is nominally 1.5 times or more that of the screw shank (major) diameter, The low profile of the socket button head makes a very clean looking, and offers a much larger contact surface.