A box end wrench is so named after its ability to encapsulate the entire head of a nut, effectively ‘boxing’ it in. It is also known as a socket wrench or a ring spanner. Ordinarily a box end wrench is best suited to hexagonal nuts or multi edged nuts. The numerous ridges allow a box end wrench to manipulate a non-square bolt head.
Step 1 – Using the Box End Wrench
Given the nature of a box end wrench, they are excellent for getting leverage in spaces where movement is limited. They have 12 angled points in which to grip a nut and either loosen or tighten it where the use of a regular wrench might be unsuitable. You can see similar angled points on the inside of a socket set.
Step 2 – Placing
Place the box end wrench over the nut. Secure it to the head of the nut giving yourself as much maneuverability as you can. Depending whether you intend to tighten or loosen it you will need to slowly maneuver it in a clockwise or counter-clockwise direction. Release the box end wrench from the nut and place it back onto the nut in the place you first started and turn again until the nut either comes loose or is tightened to its maximum.