Using a bolt, nut and screw gauge takes the guesswork out of your project, helping you quickly identify the exact size you need. Russia Calls Trump ‘Emotional’ After Putin Criticism I’ve ...

Points to consider include the following: hex size (the wrench size used to drive the bolt, or this can also be an internal hex drive), length, thread length, thread pitch, and nominal diameter ...

Metric size class is also a part of bolt identification. A US Grade 1 or 2 fastener—your basic hardware store peanut butter bolt—should never be used on a motor vehicle in the interest of safety.