Further details are as follows M8 - 5/16". M5 - 3/16". M8 5/16" - 1.25 1 - 18 - 24 18 22. M6 1/4" - 1 - - 20 - 28 20 26. Thread Table. M5 3/16" #10 0.8 - - 24 - 32 24 32. In such cases, more robust coatings, such as galvanization or stainless steel, may be necessary.
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