01-02-2022, 03:06 PM
Making a stepped stud is a simple job on a lathe. Start with a 3/8" BSW HT bolt. turn the shank down to 5/16" and thread the end 5/16" BSF. If you don't have access to a lathe, a jobbing engineer should be able to do this for you.
The alternative is to Helicoil the block to 3/8" BSF and use a 'off the peg' stepped stud, this would only be my favoured solution if the stud is one in a position with plenty of metal around it.
The alternative is to Helicoil the block to 3/8" BSF and use a 'off the peg' stepped stud, this would only be my favoured solution if the stud is one in a position with plenty of metal around it.