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I'm attempting to replace some screws. The problem is, I don't have any existing to compare against a chart.

How can I measure the tapped length and diameter? Obviously, thread spacing is still a concern.

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How are they used may give a small clue. What does it go through and what does it hold all together. and a picture too is always helpful. –  Jack Mar 8 at 18:07
    
What's it for? Many things these days have online parts diagrams and blowups. Maybe you can get the specs from the manufacturer? –  Speedy Petey Mar 8 at 18:54
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You go to the hardware store and buy one of every screw that looks like it might be the right one. Preferably from a place that sells then individually. –  Grant Mar 10 at 4:12

1 Answer 1

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I went to my local hardware store and worked with the clerk to find the right screw. I was able to measure the millimeters in depth and I already knew it was a machine screw type.

We went through about 12 different screws until we found what we were looking for.

In case anyone was wondering, I was looking for mounting screws to fit the riser of my recurve bow.

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