Screw 10 nickel-plated TFS 3.15x19 10-pack

A screw consists of a head, shank, thread, and tip. The shape of the head determines the screw's application.

The shapes are designated as follows:
RHS = round head screw (wood screw).
CSK = countersunk screw (wood screw).
RCK = raised countersunk screw (wood screw). The surface treatment can also vary.

The most common designations are:
Ni = Nickel-plated
Br = Brass
BZP = bright zinc-plated