For information on reading the markings on the top of a bolt, check out the Bolt Depot?s Bolt Grade Marking and Strength Chart at http://www.boltdepot.com. Bolts come in a variety of sizes. Check the intended application to ensure the bolt meet requirements. Bolts are made out of several different materials. Some are designed to sheer with certain loads. A good bolt grade chart will help
. determine if the bolt meets your needs.