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:
Mounts many rear air springs.
Air spring axle bracket, for #F9000 and similar air springs. Formed to weld to a 3″ diameter axle tube but will easily fit smaller or larger tubes. The edge that welds lengthwise to the axle tube is scalloped to reduce heat build-up when welding. The air spring mounting surface is the same height as the axle tube centerline.
This bracket can be used with the 474208 upper air spring bracket. About 5-1/4” wide with 1 hole, 3/8” diameter, 3” from the edge of the axle. The radius opposite the axle end is 2.5" from the hole centreline.
