Metallurgist opinion needed please

strictlypersonl · #1 (**permalink**) 10-15-2009, 09:55 AM

While the tensile strength of graded fasteners is specified, their toughness (ability to absorb energy) is not. However, I would think that the Grade 8 is preferable in this instance if it is torqued to specifications. As long as the (sandwich) compression of the belt bracket is effective, the Grade 8 should work well.

Tommy · #2 (**permalink**) 10-15-2009, 10:27 AM

A quick Google search yielded the following web site that recommended Grade 8 bolts for stock car racing applications.

http://www.stockcarracing.com/howto/...ion/index.html