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:
Formed Notch Plate
Product Details
Brand: Welder Series
Country/Region of Manufacture: Canada
Thickness: 10 ga
7-1/2" tall x 6-3/8" wide x 1-3/4" high. 10 ga mild steel, pickled & oiled.
Used as a spring clearance plate on some Mustang II applications, as well as many other uses. Check out this blog post on different uses for this plate:
https://www.welderseries.com/2011/02/08/8-c-notches-or-why-we-rarely-upsell/
