Socket Countersunk Screws
Socket Countersunk Screws often know as Flat Head Screws have a contersunk head that when fitted sit flush within the receiving surface. Fastened into place using a Hex, Allen or Torx Key with the newer Torx drive giving a much more engaged drive where more torque can be applied. Available in metric and imperial sizes. Socket Countersunk Screws are a very popular fastener, but care must be taken when purchasing as they do not automatically come fully threaded above certain lengths.