I can only find M4 in my local hardware shop, so I converted that M3 part to M4. Tested with 0.08mm layer height, snug fit. Uploaded the image in 3 formats, hopefully thingiverse will some day show it.
Theres also https://www.thingiverse.com/thing:2544883
too bad I didn't find it before remixing my own
print slowly a NxM array of this, 6mm brim