broken swing tounge bolt

[R&T Babich]

Looks like it may be a good place to use stainless steel!

From the McMaster write-ups here are the minimum tensile strengths in psi for various bolts -
70,000 - 18-8 stainless
70,000 - Type 316 stainless
80,000 - nickel copper alloy 400
120,000 - grade 5 rust resistant zinc
170,000 - grade 8 zinc yellow-chromate
180,000 - grade 9 zinc yellow-chromate

In looking at the swing arm there is a bit of slop between the arm and the bracket.
I'm going to slip a SS washer in the top & bottom of the joint to help reduce the clunk I get on the road.
The washers would still allow the arm to pivot, but should reduce the wear on the bolt as the joint works.

[R&T Babich]

For info:
Our 2000 Extreme trailer needs a bolt with a 6" shank.
The 8" bolts from McMaster have 5 7/8" shanks.
The 8 1/2" bolt shank is 6 3/8".