Masonry screws are usually made out of coated steel.
Application
They are designed for use in a wide range of masonry materials including solid concrete and brick.
Characteristics
Head shape
Masonry screws have several different head shapes but the two most common are countersunk and hexagonal.
Drive type
Masonry screws have several different drive types but the most common is pozidriv.
Body shape and tip
Like wood screws, masonry screws usually have a tapered body and a pointed tip.
Threads
The threads on masonry screws are often hi-low threads.
How are they inserted?
Most masonry screws are used with an anchor/plug which is inserted into a pilot hole before the screw is inserted. However, there are direct fixing masonry screws which do not require an anchor/plug.