Nuts and Washers Selector
Hexagonal Half Nuts also known as lock nuts are used for fastening bolts, screws, anchors, studding and other fasteners with a machined thread along side a full nut. The half nut tightens onto the back of a hexagonal full nut for extra security by 'locking' it in place.
BZP - Bright Zinc Plated - A 3 micron plating is applied to the steel to give a shiny finish. Although it does afford some protection this is best suited to an indoor use.