There are many different types of wrenches, each designed for a specific purpose. When it comes to tightening a bolt to a specified degree of tightness, the best type of wrench to use is an adjustable wrench.
An adjustable wrench has a movable jaw that can be adjusted to fit snugly around various sized nuts and bolts. This type of wrench also has a thumbscrew that can be turned to loosen or tighten the grip on the nut or bolt.
To use an adjustable wrench, first make sure that the jaws are open wide enough to fit around the nut or bolt you're working with. Then, place the wrench over the nut or bolt and tighten the thumbscrew until it's snug against the sides of the nut or bolt. To tighten the nut or bolt, simply turn the handle of the wrench in a clockwise direction. To loosen it, turn the handle in a counterclockwise direction.
When using an adjustable wrench, it's important not to overtighten the nut or bolt as this can strip threads or damage surfaces. If you're unsure of how tight to make something, err on the side of caution and don't make it too tight. With practice, you'll get a feel for how much pressure is needed when using an adjustable wrench.