A nylon washer door hinge is a very popular option for exterior door types, particularly commercial grade door hinges which are used on shops, cafes, restaurants etc. The use of a door hinge is to add security and safety for those who are entering or leaving a building as it provides an additional layer of protection against people coming through the doors.

In most homes, the double washer door hinge is a part of the door that most people will never even notice or use. It's main use is for keeping the seal between the door frame and the door jambs from shifting, which allows water to enter your home through an unsealed door.