Hi @schoggi Welcome to the Forum
Use Sketch > Line/Arc > choose the Line Option
Sketch a Diamond shape using the Grid set to 0.5mm or similar alternative
Use Tools > Extrude > Move the Double Arrow upward by the required measurement, you can type in precise requirements
Move the curved Draft Arrow as required
Select the ‘Diamond’ then use Transform > Move/Rotate > hit the ✚ Icon
Copy and position as required. At present there is no Tool or Feature to automatically generate a specific pattern.
Search the Forum, Magnifying Glass at the top of every Forum Page, for knurl, pattern, etc.
EDIT: This is probably too large for your purposes, the sides of the Diamond Base are nearly 6mm long: