This morning I got a note that I ordered wrong ejector pins!
I immediately went through the drawing; drawing is right but I wrote the spec. incorrectly.
Took couple minutes checking what does it for?
Ejector pin is used to eject parts out of a mold so the diameter(D) does matter than the head(H).
The spec. should be read as D(ψ)*Length as always.
Mistake corrected and learned!
https://ezb2b.tw/eng/cp1263-101-straight-ejector-pin
image credit