Reinforced Grey Knurled Knob D.34 x 10mm Deep to Suit D Shaped Shaft OMQ1-2-01


SKU: OMQ1-2-01 Category:






For sale here we have the above…

Durable Multi Purpose Control Knob 

Sold as a multi choice re quantity, see drop down box above.

2, 5, 10 or 25 Pieces – the more you buy the greater the discount.


Knurled rim enabling a secure grip for precise adjustment.

Polished aluminium centre plate (may be slightly marked as knobs stored loosely bagged)

White position pointer


34mm Diameter 

10mm Push Fit 

suits a 4mm Diameter D shaped shaft. (See photo’s)

Outer diameter of D socket column to receive the 4mm shaft is 11mm

Depth of D socket 20mm

Made from a tough plastic the  ‘D’ socket is sturdy enough but further to this, it then it has a reinforcing high tensile steel clip ring fitted.

The rotary switch we show in the photographs above has a solid multi switching action which the knob copes with easily.

Please note:- When fitting the knob to a 4mm shaft the tolerance is so tight that quite a lot of force is required, the knob comes already lubricated with a little grease which helps in fitting the knob fully to the shaft, (the application of a little more may help in fitting).

If replacing a broken knob firstly check that the D shaft is 4mm and then most importantly check that the shaft hasn’t seized.

Very often this is the reason the old knob has broken, if it moves freely then this replacement will be fine, and as our minimum quantity is 2 – you get a spare!

To ensure long life, at this point it might be prudent to clean and lubricate the mechanism of the unit to which the new knob is being fitted so it rotates smoothly and easily.

These knobs are multi-purpose suiting applications from the precise adjustment of potentiometers/tuning controls on radio’s etc. to domestic appliance switches- gas cookers, electric heaters etc. 

Basically if the shaft you need a knob for a shaft that looks like the one in the pictures above, then problem solved.

*Seen pictured with rotary switch (Item number 391973403304) This is not included in this listing but is available for purchase from our shop, just copy and paste the item number into the ebay search bar.

These parts came to us as part of a lot of surplus stock from a large Milspec type OEM and have been kept in storage for some time, we have therefore classified them as ‘new other’. They are in good serviceable condition though having been stored loosely bagged we have noticed a few slight marks on the aluminium disc in the centre due to them rubbing together in the bags.  
The photographs are representative of their condition, and, as with all our products they come with a full guarantee. 


If you have similar items to this, or indeed any electronic components that are surplus to requirements please contact us with details.

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