RS PRO Black Multiple Lobes Clamping Knob, M8, Threaded Hole

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Subtotal (1 pack of 10 units)*

£35.60

(exc. VAT)

£42.70

(inc. VAT)

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  • 100 unit(s) ready to ship
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  • Plus 200 unit(s) shipping from 16 October 2025
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Per unit
Per Pack*
10 - 40£3.56£35.60
50 - 90£3.512£35.12
100 - 290£3.47£34.70
300 +£3.426£34.26

*price indicative

RS Stock No.:
686-171
Brand:
RS PRO
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Brand

RS PRO

Thread

M8

Thread Diameter

8mm

Thread Length

12mm

Knob Shape

Multiple Lobes

Mounting Type

Threaded Hole

Knob Diameter

44mm

Insert Material

Brass

Colour

Black

COO (Country of Origin):
CN

RS PRO Phenolic Multiple-Lobed Handwheel Knobs


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.


These multiple lobed handwheels – also known as star shaped handwheels – provide an easily-gripped shape, with a varying number of lobes depending on the grip and pressure required. The knobs are fitted with either a protruding screw insert (male), made from a combination of impact-resistant thermoplastic bodies and zinc-plated steel inserts, or a threaded brass recess (female). Zinc-plated steel and brass both provide wear resistance for the threads to ensure that the threads last throughout general use and are not easily damaged or sheared.


Male knobs: M6 (RS 686092), M6 (RS 686109), M8 (RS 686115), M8 (RS 686121), M10 (RS 686137), M10 (RS 686143).


Female knobs: M5 (RS 686159), M6 (RS 686165), M8 (RS 686171), M10 (RS 686187).


Through threads: M6 (RS 686193).


Features & Benefits


  • Nylon Polyamide 6

  • Zinc plated steel studs and brass female and through threads

  • Matte black finish

  • Working temperature range of -30°C to +85°C

  • Melting point of +215°C

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

Applications


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. Commonly used as fixing or fastening solutions in a variety of industries:


  • Access doors

  • Drawers & panels (domestic and industrial)

  • Clamps and fixtures

  • Machinery

Standards

BS771

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