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Drilling out a hole to suit M12

742 Views 2 Replies 2 Participants Last post by  DeadLOK
This seems a very specific random question and I wasn't sure where to put it...

If I wanted to drill a hole out thats too small for an M12 bolt to fit in snugly.. do I use a 12mm drill bit? the hole doesn't need to be threaded just able to slide the bolt in without movement.
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Yes sort of, the M12 refers to the outside diameter of the screw thread so a 12mm hole would give you a very snug fit and may even need opening up very slightly with a file.

Ah thanks for the answer, I ended up drilling a trial hole in a piece of wood first and it fit very snugly so carried on doing my rear beam hubs and was spot on.

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