Available in inch and metric sizes, GN 319.2 Phenolic Plastic Revolving Ball Knobs, Long Shoulder Type, Tapped, can be utilized instead of other revolving handles. Tapped shoulder lets ball knob be mounted from underside via screw or bolt, and knob can then be mounted to sheet metal of various thicknesses, flat bar, or castings to create cranking or turning mechanism. While hand piece is black phenolic plastic, shoulder is made of zinc-plated, blue passivated steel, blind tapped.
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