RS PRO Black 4-Arm Clamping Knob, M8, Threaded Stud

Male knobs: M6 x 13mm (RS 686604), M6 x 25mm (RS 686610), M6 x 40mm (RS 686626), M8 x 20mm (RS 686632), M8 x 25mm (RS 686648), M8 x 40mm (RS 686654).

• Wood-filled phenolic knobs


• Zinc-plated steel threaded studs


• Made to BS771 standards


• Working temperature range of -30°C to +140°C


• Tolerant of weak acids, with excellent resistance to chlorinated hydrocarbons

These star-shaped handwheel knobs are used in a variety of applications, with the shape providing an ergonomic grip for user comfort and added torque to be applied by hand. They are commonly used as fixing or fastening solutions in a variety of industries, including:

• Access doors


• Drawers & panels (domestic and industrial)


• Clamps and fixtures


• Machinery