Ribbed knob with hex nut pocket M3 - clamping knob, 4 sizes 16/20/25/30 mm, no supports

Fourteen deep flutes. Grips with oily or gloved fingers, which is why it belongs on machines rather than on a desk. Takes a DIN 934 hex nut M3 from the back - the thread is steel, not printed plastic, so it survives being done up hard. The bolt runs right through, so its length does not matter. M3 is the size for camera plates, small jigs and enclosure lids. ## Sizes in the download All 4 diameters, same shaft fitting: | Diameter | Height | Volume | Weight in PETG | |---|---|---|---| | 16 mm |…

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