Ex communications equipment (specifically Philips) but of course useable anywhere that you need a good secure knob to fit a small diameter shaft that has no other means of securing a knob (i.e no need for a grub screw(s) or 'flat spot)
Collet knobs are often used in high quality equipment because there is no spline fitting or grub screws which can become loose over time.
These knobs have an all metal centre (in this case aluminium) fitting which grips the control shaft tightly when end nut is tightened.
To access this collet knob 'internals' ...
The plastic knob is 'pull off' i.e it is a friction fit
This reveals the metal collet system, unscrew the brass nut and this allows the grip to release from the component shaft. Refitting this collet knob is the reverse procedure.
All aluminium grip mechanism with a brass securing nut
Light grey top cap, darker grey body and flange
DIMENSIONS: (measured with digital calipers)
16mm OD (body) 24.5mm (flange)
17mm body length
Body is ribbed for easy finger grip control
Flange is plain
Top cap has a black pointer line
Collet fits onto a 4mm round shaft
Unlike 'standard' collet knobs, the top cap CANNOT be removed.
COSMETIC CONDITION:
Clean
Unscratched
Undamaged in any way
