Quoted from maffewl:
From the manual, it is a "Bumper Post" with 8-32 threads. Link below.
I used a metal post with pointed-top as I liked the "spiked" look better and also wanted the wider base and thicker threads (10-32) as these things get pounded. Link below.
https://www.pinballlife.com/1-78-tall-metal-post-with-10-32-threaded-base.html[quoted image][quoted image]
With the spike do you use one bumper or 2?