When a Phillips is not a Phillips Plus So Much More!

Step 82 External Hex Drive

[[br]]What more can be said for the common hex head bolt or nut, they are everywhere. Corners tend to round when over torqued especially with an open-end wrench. The advantage over a square shaped head is the multiple ways the wrench will fit, especially useful in close applications with limited tool access. The disadvantage is that in high torque applications, loose tools or repeated use the corners tend to round out. They come in both metric and non-metric sizes and in many single wrench or socket driver styles.[[br]]