Most people have encountered an Allen wrench (or Allen key). It’s the L - or S -shaped tool with a six-sided head that can ...

PREMIUM - Precisely machined HEX & Torx sizes. Crafted and Designed with superior materials for increased torque and unmatched hardness. DURABLE - Industrial grade, heat treated S2 alloy steel ...

The tool is, therefore, commonly known as a hex wrench or hex key. So how did Allen enter into it? Like most non-proprietary consumer products, it was an attempt at branding. In 1910, William G.