There are a lot of rules worth following in the world of tools, one of those being the three-thread rule for bolts and nuts.

Bolts can be frustrating. After taking the trouble to measure a bolt's thread size and making sure you have the right nut, it's still possible to end up with a bolt that's too long for its job.

It’s easy to cut bolts and small machine screws to length. On the other hand, there isn’t any job so small or simple that it can’t be done wrong, and this is a classic example. Get it right, and you ...