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

Knobs are used in a wide variety of applications in our day-to-day lives and perform many functions, from being used as fixed handles to being used to tighten, loosen, adjust, clamp and push other components or pieces of equipment. They are used in various applications, from industrial and construction machinery to audio and visual equipment.

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