This coach bolt was bought as m12, shouldnt it measure 12mm diameter?
- Thread starter Gary111
- Start date
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Coach bolt or coach screw? I'm guessing screw as I wouldnt have thought you'be be able to measure the smaller diamter on a bolt with that type of gauge.
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They have sent you an M10
"The "M" designation for metric screws indicates the nominal outer diameter of the screw thread, in millimetres. This is also referred to as the "major" diameter."
en.wikipedia.org
"The "M" designation for metric screws indicates the nominal outer diameter of the screw thread, in millimetres. This is also referred to as the "major" diameter."
ISO 965 - Wikipedia
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