Unless you are a mechanical engineer, you might not realize there’s a lot of nuances to something even as simple as a nut and bolt. How many threads do you need to engage? Do lock washers work?

He uses a vise, but we’d imagine that an arbor press is more commonly used. Lock washers and nuts seem like a simple topic, but it is way more complex than you probably thought. Way more complex.

Toothed nuts or nuts that have built-in toothed washers that engage and lock against the bearing surface. Some nuts may also cause a wedging action against the bolt threads. Special-thread nuts ...