Bolt knob generator

A grippy knob for a bolt or a nut, M3 to M8. Pick the bolt size; the hex pocket and the hole follow. Set the knob's size and how many grips.

Bolt knob generator: the part as it comes

How to make yours

  1. Pick your bolt size, M3 to M8. The nut pocket and the bolt hole size themselves.
  2. Set the knob's diameter and height, and how many grips go round it.
  3. Download it as STL, 3MF or STEP, and print it.
  4. Press the nut into the pocket with a vice, or tap it in with a hammer.

What each slider does

Knob diameter 20 to 60 mm
How wide the knob is across.
Height 8 to 30 mm
How tall the knob is.
Bolt size (M3 to M8) 3 to 8
The bolt size. The hex pocket fits that size's nut and the hole fits the bolt.
Grips 6 to 24
How many finger grips are cut round the rim.

Also called

knob, bolt knob, nut knob, thumb screw, clamping knob, star knob, jig knob, M3, M4, M5, M6, M8, hand knob, replacement knob.

Ready