Grade 8 Bolt Question?
I know six lines on the head of a bolt designate a grade 8 fastener. But does the same hold true for a bolt that holds six grooves instead of six lines? (see middle bolt in photo) Thank you.
I know six lines on the head of a bolt designate a grade 8 fastener. But does the same hold true for a bolt that holds six grooves instead of six lines? (see middle bolt in photo) Thank you.