Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

Must all fastener components in an assembly be matched? Can different grades be mixed?

April 26, 2017assembly components different fastener grades matched mixed

0

Posted

Must all fastener components in an assembly be matched? Can different grades be mixed?

1 Answer

0

Posted

It is very important to match fastener components. For example, if a low carbon, grade 2 nut is used with a grade 8 cap screw, the threads of the nut may very well fail before enough torque can be applied to reach the needed clamping force. Or the nut will distort as the assembly is tightened, jam against the bolt, and cause the bolt to twist as it is tightened. This may cause the bolt to fail.