How do you convert from different fastener measuring systems?

1070 Views 2 Replies 3 Participants Last post by Mr Chips, Jun 12, 2009

gomerpyle

Discussion Starter · Jun 11, 2009

When i go to the store , you see #6,#8,etc. also M6,M5, 1/4" etc.. Is there some conversion factor between them?

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You can't really convert for thread pitch, but you can for diameter. A #10 wood or sheetmetal screw is approx the same as a 3/16 threaded screw (aka 10-24 or 10-32 depending on thread pitch). A number 5 wood screw is about 1/8", which is close to a metric M4 diameter. it can be confusing for sure....

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