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Imperial vs metric size for grub screws

Started May 28, 2020 | Questions thread
craig66 Senior Member • Posts: 1,484
Re: Imperial vs metric size for grub screws

Where did the part with the screw come from? If it was manufactured outside the US, it is almost certainly M3. I just measured the OD of some M3 screws with a micrometer: 2.85 - 2.9mm.

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