If the hole isn't washed out too big a helicoil will give a permanent and virtually invisible repair. For example if the stud is 3/8" fine thread the drill size would be 25/64" or .390" If the hole is larger than the drill size another method should be used. Here's a tap drill chart for helicoils.
http://www.carbidedepot.com/formulas-tap-helicoil.htm

Curt B.


1952 1300 Canadian 1/2 ton restomod
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