Nails have different shapes due to their various uses. The most common nails are called "wire nails". Other common nail names include pins, thumbnails or bent head nails. Nails are widely used in many scenarios. Rivets for general aircraft carriers are expensive, while ordinary nails are cheap.

The iron nail, with a flat head at one end and a sharp end at the other, is mainly used for fixing or connecting. There are many kinds of iron nails, including ordinary nails, felt nails, cement steel nails, headless nails, shot nails, and roll nails. The surface is galvanized and copper plated, which shall be selected according to actual needs.