Metric Slotted Spacers, self-retaining for Machine Screws and Bolts - Split Shims

Here is a fairly full set of metric shim / spacer models for machine screws, rods, bolts, axles etc. Most common sizes should be here, but if not, please leave a comment and I'll try to fill in anything that is missing.

The inside diameter is the screw size. The Outside diameter is 3 x screw size. And the slot is 0.3mm less than the screw size… Wide enough to be able to push them on, but narrow enough that they don't just fall off.

If you need something custom in a hurry, keep in mind that your slicing software probably has a function to scale models before slicing. In Orca Slicer for example, you can uncheck the box for “Uniform scale”, and then set the z-dimension to whatever length of spacer you need. This would be exactly equivalent to downloading that length in the same profile.
 

BOM: Use of these affiliate links is much appreciated... If it ever happens, I'll probably start posting more. :-)

• Filament: 

  • PLA+: https://amzn.to/3CEHMk0 

  • ABS: https://amzn.to/3X3hUVO 

  • Polycarbonate (inexpensive): https://amzn.to/3EXZkII 

  • PPA-CF Core (Pretty much the ultimate filament): https://amzn.to/4huoii1 
      (Note the print temperature requirements on PPA-CF before buying.)
     

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CHANGE LOG:
  2025-10-27: Fixed issue mixing up M2 and M2.5 files.