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My layman's understanding - with a Google assist - is that the reusable bolts undergo elastic deformation - they deform under load but return to the original shape when the load is removed. A bolt formulated to undergo plastic deformation when torqued to spec preloads the joint to ensure that the bolt doesn't work loose due to vibration, but it makes the bolt non-reusable.
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1999 Carrera 4 • Aero kit • 4" UD Pulley
My Corvette doesn't leak oil... it sweats horsepower.
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