|How to Read a Screw or bolt Thread Callout
2018-07-30 14:24 UTC|
|I find this wikihow on how to read screw/bolt thread code very simple and informative.
All I wanted to know was what a marking on a pack of bolts meant. For example 1/4 20 1.5. I had guessed that the last number is probably the length by measuring the bolt. But the rest of it? Now I know it means: diameter of the screw or bolt, number of threads per inch and length of body.
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