The head of the Allen CSK Screw is flat and conical, countersunk below the surface or in line with it. For great appearance, the provision of an Allen CSK screw offers neat, seamless finishing without compromising its exceptional grip and strength. Normally, Allen CSK Screws are driven by an Allen key or hex wrench, offering precision and control in torque application. https://www.dalloyedbolts.com/allen-csk-screw-manufacturers-suppliers-stockists-exporters.html