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Registered
Join Date: May 2002
Location: Lakeville, Minnesota
Posts: 1,116
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I think the correct term is "torque to yield" and, yes, such fasteners must be replaced not reused.
I don't know the answer to your other questions and I don't know if the original 2.7 studs were torque-to-yield or not. Hopefully someone else will answer.
Jerry M
'78 SC
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