What is the difference between a nutsetter that has a standard hex design vs. one that has a lobular design?

There are a few key differences between these two types of nutsetters. A nutsetter that has a lobular design drives the fasteners on the sides instead of putting pressure on the corners to turn. This helps maintain the true shape of the fastener reducing corner stripping and damage. Additionally, a nutsetter with a lobular design provides corner clearance where paint build up can occur.

A nutsetter with a standard hex design uses the corners of the fastener to drive. Putting pressure on the corners of the fastener will promote corner stripping. In summary, each type of nutsetter can drive a fastener, but a nutsetter with a lobular design helps keep the fastener in good shape.