The Hillman Group 1/4 I.D. x 5/8 O.D. x 3/8 in. Thick Heavy Duty Spacer (10-Pack)

A Spacer is a fastener that is used to create space between two objects, often to properly position them. In the world of electronic components and electronic hardware, spacers are typically used to space circuit boards, panels, doors or gears. Spacers have no interior threading and come in a variety of materials including aluminum, brass, plastic, steel and stainless steel.