Countersunk Head Self Drilling Screw

Product Description: 

Countersunk screws, also known as flathead machine screws, have a 90-degree conical head, 

similar to common wood screws.

 The head has a tool tightening groove and comes in slotted, 

Phillips, and hexagonal shapes.

Product Function:

 A 90-degree conical recess is machined into the surface of the mounting hole on a connector.

 The head of the flathead machine screw fits within this recess, flush with the surface of the connector. 

This type of screw is more aesthetically pleasing and is used where a slight protrusion is permissible.