Pin Facts

A pin is an object that is used to keep or fasten things together and is somewhat related to a nail but the difference is that pins are smaller than nails. There are three parts of a pin namely the head, the body, and the tip. The head is often made out of plastic while the body and the tip are made of steel, copper, or brass. The body is long because it is the part where the things are fastened together. The pin is ended with the sharp tip in order to make a very small hole to the fastened things. 

There are three main categories of pins namely the sewing and fashion pins, the general purpose pins, the steel pins without a head, and the mechanical fasteners. Safety pins, bobby pins, collar pins, lapel pins, and other types of hairpins are examples of the sewing and fashion pins. Bobby pins and hairpins are used to grip the hair. Collar pins are used to hold the collar and lapel pins are used to decorate the clothes. General purpose pins are composed of the push pins, also known as the thumbtacks, and the paper crickets, push pins which are new.

 Steel pins without a head are thin and hard pins used in woods in order not to be seen. Pins are also associated to engineering and in machines where they are commonly used to locate or hold parts and are known as pivots, hinges, shafts, jigs, and fixtures and all of these are examples of the mechanical fasteners. Under the mechanical fasteners, there are large types of pins that has been known for a long time and these are called cylindrical pins, solid tapered pins, groove pins, slotted spring pins, spirally coiled spring pins, clevis pins, cotter pins, and split pins.