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:
LS Engine Mount Gusset
Product Details
Brand: Welder Series
MPN: LS211
Thickness: 3/16"
6-1/4" x 3" with a notch for a 1-3/8" diameter tube. Often used with plate #LS210 and #10093 tube.
