This is a great go to chart even though I have this same chart in factory CSM, Chassis Service Manual. I really need to print a few copies and post them around my shop. I've been on a factory bolts and fasteners kick. I've been cleaning, bagging and tagging. I'm a specific cabinet for Oldsmobile bolts, fasteners, specializing Olds engine parts. It's always so much easier if you have spares whenever you need them. Jmo.