At 7,500 rpm, the pistons in your race engine reach either top-dead-center or bottom-dead-center and change directions 25 times per second. That means the piston goes from traveling at top piston ...

Using a torque wrench incorrectly can be worse than tightening by feel. Fix the most common mistakes with these shop-proven ...

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 ...

Torque is a twisting force. The muscle you apply to the top of a screw-top jelly jar is torque. And when you use a wrench on a threaded fastener (such as a bolt, nut, screw, or stud), you're applying ...

As Charlie Chaplin figured out during his brief assembly-line career depicted in the 1936 film Modern Times, tightening bolts all day can be a real pain. Lucky for Charlie, and for any one of us ...

When hot rodders build a street machine or street rod, countless hours are expended selecting the proper major components, building the drivetrain, detailing the chassis, choosing the right tires and ...

An Introduction to the Design and Behavior of Bolted Joints, John G. Bickford, 1995 Threaded-fastener technology has been around since screws were used at the Hanging Gardens of Babylon in the 7th ...

A torque wrench (pronounced "tork") is one of the essential tools you need before starting an engine rebuild, and helps determine when the appropriate amount of force has been applied to a fastener ...

One of the most critical factors in determining the reliability of a threaded-fastener joint is the force the tightened fastener exerts on an assembly, which is known as preload. And preload depends ...