Various knobs for cylinder head screws with M3/M4/M6 or M8 thread.

For explanation, I have designed two different versions.

The standard version has a hexagon socket integrated in the knob. The screw is inserted or glued onto this, whereby the thread length of the screw remains the same.

The "thread" - version is for high stress when turning with a very large torque. For this purpose, the screw is screwed into the knob and glued in place. This shortens the screw by approx. 5 mm, but the connection is extremely strong and resilient.

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