A hex cap screw is a cap screw with a hexagonal head, designed to be driven by a wrench.
Commonly referred to as bolts or screws. These bolts are unique because of their threading.
Hex cap screws are fully threaded in shorter lengths (usually around up to 1-1/4 inch, depending upon the bolt diameter), and partially threaded with a shoulder beneath the fastener hex head in longer lengths.
Hot dipped galvanized finish offers corrosion resistance due to the molten zinc bath finishing process