When we ran a full service chassis fab/turn-key hot rod shop a number of years ago, it was always useful to have threaded things around to weld into the frame for some kind of mount, etc.
Here’s a list of all our threaded things for your reference:
Coil Over Wrench
Product Details
Brand: Welder Series
MPN: 405735
Country/Region of Manufacture: Canada
Thickness: 3/16"
Designed for notched threaded spring collars. Can also be used with collars that have a hole in them by rounding off the tip.
Spanner wrench fits most brands of coilovers – Bilstein, Koni, Heidts, Ride Tech, TCI, and others.