Keystone Electronics Corp. Single Bar Instrumentation Knob, Red 8571

Single bar instrumentation knob in black with red inlay, made of colored polypropylene hub with a thermoplastic elastomer soft-touch gripping surface and a brass, nickel-plated insert, supplied with two set screws for shaft attachment. Shaft diameter is 0.250 inch (6.4 mm), knob height is 0.700 inch (17.8 mm), inside diameter is 0.550 inch (14.0 mm), and nut clearance bore depth is 0.090 inch (2.3 mm).