Heavy hex nuts are both larger and thicker when compared to the finished hex nuts. Heavy hex nuts come in a number of grades. Moreover, the heavy pattern is usually used for bolts with a large diameter and that which possess high strength. Well, we have a nut compatibility chart with us that will assist you in determining heavy hex nut(s) which are compatible with a specific grade of bolt. Since hot-dip galvanizing tends to add 2.2 – 5 mils thickness to the threaded portion of a fastener, our galvanized heavy hex nuts usually get tapped oversize in order to balance the corrosion resistant coating of the bolts.
Diameters: 3/8″ – 2-3/4″
Finish: Plain and hot-dip galvanized
Grades: A563 (grades A, C, and DH), A194 grade 2H