Zerk Not Threading

YY1 said
I was gonna say-

Frequently, the holes in the suspension parts are not tapped.

I've always found it odd that they assume a tiny fitting will self-tap into a hardened or iron part.

Most times they do, some at odd angles, and some with excessive force.

Apparently there was a burr in the entrance to the existing threads, so I started a bolt with similar threads to get the burr out (did not have a tap that small). That was enough to get the fitting in and problem over. Odd problem for sure.