J.W. Winco, Inc., a supplier of standard industrial machine components, announced it now offers GN 319.2 Phenolic Plastic Revolving Ball Knobs, Long Shoulder Type, Tapped, in inch and metric sizes. These RoHS-compliant revolving ball knobs can be utilized instead of other revolving handles, i.e. with handwheels. The tapped shoulder allows the ball knob to be mounted from the underside via a screw or bolt. The knob can then be easily mounted to sheet metal in a variety of thicknesses, flat bar, or castings, to create a quick cranking or turning mechanism. The hand piece is black phenolic plastic (Duroplast PF), and the shoulder is made of zinc-plated, blue passivated steel, blind tapped.