Stem Caster, Swivel Caster, 130 lb Load Rating, 0 to 299 lb, 4 in Wheel Dia., 1 in Wheel Width, Polyolefin Wheel/Tread Material, 4 13/16 in Mounting Height, Plain, 7/16 In.-14 x 1-1/2 in Caster Stem Size, Threaded, Steel Caster Frame Material, Zinc Plated Frame Finish, Yes Non-Marking, 1 Number of Wheels General purpose threaded stem casters are used on carts, furniture, storage cabinets, storage bins, display stands, appliances, retail fixtures, and other equipment in a wide variety of institutional and industrial settings. They have double ball swivel bearings that allow the caster to swivel smoothly.Threaded stem casters are the most commonly used type of stem caster. They have a threaded stem on top that screws into a threaded hole, bracket, insert, or socket on a piece of equipment. T.