I was wondering whether a mechanical engineer type here could provide a reference for the proper grade of bolt to screw into a cast iron engine block. My theory, which appears to be backed by ...

Ever been strolling through a hardware store or perhaps an auto parts establishment and wondered of the meaning behind the markings on the hundreds of thousands of bolt heads on the shelf? Whether you ...

What do the small lines or numbers stamped on a bolt actually mean, and why do they matter? In an article featured on ...

Like it or not, Detroit's going metric. New-design engines, chassis, and drivetrains are in most instances entirely metric. Older engines and chassis may have a combination of both standard (English) ...