Hollow knurled knobs
Winco GN 421 hollow knurled knobs with a threaded stud come in inch and metric sizes. RoHS compliant, the knobs are constructed of black nylon plastic; the threaded stud is made of zinc-plated steel. The knobs have a maximum heat resistance of 230°F.
J.W. Winco, Inc.; 800-877-8351; www.jwwinco.com