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:
Master Cylinder Bracket Only
Product Details
Brand: Welder Series
Thickness: 3/16"
Holes are slightly slotted to mount either Ford (3-3/16" c-c) or GM (3-7/16" c-c) master cylinders. Price is for the master cylinder bracket only.
Formed. Center hole is 2-7/16″ from boxed frame.
Part of pedal kit #WS13704.
Use with 2 of #20275.
