If you use flat head screws in finishing, consider using a flat head screw cover (aka “beauty cap”) to hide the head (not all drive types accept screw covers). The advantage is that little or no part of the head protrudes above the surface of the material. Unless the material is very soft, flat and oval heads require a countersunk hole. Sometimes features are combined, as in the case of slotted hex, hex washer, slotted hex washer, and round washer head designs.Ĭountersunk designs consist primarily of flat, oval, and bugle heads. This style includes binding, button, cheese, fillister, flange, hex, pan, round, socket, and low socket, square, and truss heads (binding head is sometimes referred to as binder head). Non-countersunk heads – where the head is completely exposed comprise the widest variety. There are two basic designs: countersunk and non-countersunk. The drive recess or style is ultimately based on the tool you use during installation. Your chosen head shape or style can either serve a functional or decorative purpose.
The two basic types of screw heads, countersunk and non-countersunk, include various unique designs.
