Allen key
/ˈalən kiː
/(US Allen wrench)
noun British trademark
A spanner designed to fit into and turn an Allen screw.Presumably it arrived in a flat pack with instructions and an Allen key....
- However, there are some differences in how the blades are changed, ranging from a hex-head set screw that requires an Allen wrench to a simple flip-lever design that does need a tool.
- Packing a small adjustable spanner and a set of Allen keys will make sure you can do those last-minute running repairs.
Origin
1960s: from the name of the manufacturer, the Allen Manufacturing Company, of Hartford, Connecticut.
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- Point IV
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