Posts Tagged: measure bolts

How to measure a bolt

Measure bolts for automotive use Here’s how to measure bolts. A warning about measuring bolt size Bolt shank diameter and thread pitch are the two most important measurements. Measuring bolt shank diameter is the same for both metric and SAE bolts; it’s measured from the threads. But thread pitch is different. See the next paragraph. Wrench size refers to the hex head. Wrench size is where most DIYers get messed up. The wrench size is NOT the bolt shank diameter size. In other words, a bolt that requires a 10mm … Read More