There are an estimated 4,031 screw, bolt and nut manufacturers in the United States alone, which employ around 118,998 people. The reason for that high number of manufacturers? The sheer number of different types of screws, nuts and bolts that are needed for different projects. From hex head bolts to plow bolts, there’s no shortage of specialty screws and fasteners to fit your needs. But where should you look to find the specific nuts and bolts you need?
There is a reason for the expansive selection of screws, nuts and bolts: the correct sizing and shape is necessary to ensure that a fastener, which is considered to be a wedge wrapped around a post, holds tightly to a screw. This fact has been known to be true at least since 1908, when square-drive screws were created by the Canadian inventor P.L. Robertson. And today, it is the reason that ASME standards specify that "Machine Screws" range in diameter up to 0.75 inches or 9.05 millimeters: to ensure equipment safety.
But with such a variety, which screw, nut and bolt suppliers should you trust to buy your hex head bolts and other pieces from? The answer is simple: online retailers. While hardware stores usually mark up their wares by extreme ratios, online suppliers can provide varying shipments for much lower costs, helping you complete your projects safely without paying unnecessary costs.