Screw 11 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 shape is designated as follows:
TKS = wood screw, domed head.
TFS = wood screw, countersunk.
TKFS = wood screw, dome countersunk. The surface treatment can also vary.

The most common designations are:
Fn = Nickel-plated
Mäss = Brass
FZB = Bright galvanized