Round

A round spacer is a cylindrical, unthreaded, mechanical device used to hold two components at a given distance from each other.

Aluminum round spacers are popular for its light weight / strength compromise. It is non-magnetic, performs well in severe temperatures, and has insulating properties.

Nylon is a good insulator and has a surface smoothness which will not fray the insulation of wires that rub against it.

Brass is used in making high-quality spacers. It is conductive, resists corrosion, and is non-magnetic. It is costlier and heavier than aluminum and is usually plated zinc or nickel.

Stainless Steel Round Spacers has the advantages of brass (conductive and non-magnetic) but has superior resistance to corrosion and chemical fumes.