In terms of width, the 1 1 2 heavy hex nut measures 1 1 1 2 heavy hex nut dimensions.26 inches across the flats. This wider width provides more surface area for contact with the bolt or screw, reducing the risk of slippage or loosening over time. The increased width also allows for easier installation and removal, as it provides more room for a wrench or socket to engage with the nut.