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:
Gap It tool
Product Details
Brand: Welder Series
MPN: 612005
Country/Region of Manufacture: Canada
Gap It Tool - a quick handy tool to measure consistency of gaps during the build process. Use on panel, door gaps, trunks and help align doors. Convenient size to keep in your pocket, affordable enough for the entire shop to have. Each "finger" is a different measurement: 1/8", 3/16", 1/4" and 5/16".
Imagined by Tim Strange at Strange Motion, designed by Dom Tucci at Tucci Hot Rods, and printed in-house at Welder Series on our Formlabs SLA 3D printers.