then you have to fix the old bolt and determine the thread and diameter. In this case 5/16" diameter - 22 threads per inch (TPI) That is currently a BSF _British Standard Fine thread, so I ordered a Thread cutting die in that size from Ebay and the merchant sent me a more common 5/16-24..... and after and "politely" worded email they shipped me the correct hard to find one......
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Here is (Left to right) the Original, then the first homemade one with wrong thread die and then fixed with right die, and then on the right is the newest one made today at lunch with the right die first, not quite finished (Tonight is my Apprentices night and he was in a chatty mood)
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