Types of nails

Using nails is an effective way of fixing or joining pieces of softwood together. Hardwoods can be difficult to join with nails as they tend to bend under the impact of the hammer. Below is a range of nails that can be used depending on the type of wood and the nature of the work to be attempted.

• ROUND WIRE NAIL - This is used for general work. It is not attractive in shape and it can split wood when hammered in position
• OVAL WIRE NAIL - This is a long nail and care must be taken when it is hammered into the wood. It is unlikely to split the wood.
• LOST HEAD NAIL - This is ideal if it is necessary to hide the head of the nail as a punch can be used to hammer the head beneath the surface level.
• PANEL PIN - A very popular way of joining woods although glue is usually included as part of the join.
• TACK - Can be used for fixing textile materials to wood for example, fixing upholstery to furniture.
• SPRIG - This no head and is generally used for fixing glass to glass in wood frames.
• ANNULAR NAIL - The teeth of this nail hold it in place firmly. Therefore, it is used for fixing plywood and other materials.
• HARDBOARD PIN - The diamond shaped head is hidden when used in materials like hardboard   
• CORRUGATED FASTENER - This will hold the corners of wood frames firmly together

From http://www.technologystudent.com/joints/nail1.htm