Thumb screw knob for M3 socket head cap screw - cross knob, 4 sizes 30/36/44/54 mm, no supports

Four arms, teardrop section. The highest torque of the twelve shapes - for valves and clamps that are done up by hand. Takes the head of an ISO 4762 (DIN 912) socket head cap screw M3 from the back. A hex boss in the pocket floor engages the screw's socket, so the knob turns the screw instead of slipping round it. The shank points out of the back, the front stays closed. M3 is the printer-bed levelling screw - the most common reason anyone prints a thumb screw. ## Sizes in the download All 4 di…

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