Hex sets differ from hex bolts are they’re fully threaded to the head bolts; hex bolts are only partially threaded. Our range of hex sets come in grade 10.9 and grade 8.8 with self-colour and zinc finishes available, we’re also proud to offer both metric and imperial sizes. Franciskirk.com not only offers a huge selection of hexagon sets, hexagon bolts, we also offer a wide range of socket head caps screws, socket set screws, socket countersunk and anchoring products.