CHAPTER V.
WOOD FASTENINGS.
The following are the chief means by which pieces of wood are fastened together: nails, screws, bolts, plates, dowels, glue, hinges, and locks.
NAILS _Nails_, Fig.

226, may be classified according to the material of which they are made; as, steel, iron, copper, and brass.

Iron nails may be galvanized to protect them from rust.

Copper and brass nails are used where they are subject to much danger of corrosion, as in boats.
Nails may also be classified according to the process of manufacture; as, cut nails, wrought nails, and wire nails.

Cut nails are cut from a plate of metal in such a way that the width of the nail is equal to the thickness of the plate, and the length of the nail to the width of the plate.