The term "monkey wrench" dates back to 1807 in Great Britain. Referring to the tool, the phrase appears in E.S. Dane’s "Peter Stubs & Lancashire Hand Tool Industry" catalog, which reads "Fleetwood, Richard...Parr, Rainford. Screw plates, lathes, clock engines...monkey wrenches, taps."Know More
In 1858, Charles Moncky of Baltimore, Maryland, applied for a patent for the monkey wrench. Some believe the term monkey wrench is a derivation of Mr. Moncky's name, but its use in Great Britain in 1807 negates this assumption.
The phrase "throwing a monkey wrench," meaning the creation of an obstacle, dates to a 1907 article in the Chicago Tribune, which reads: "It should look to them as if he were throwing a monkeywrench..."Learn more about Tools
A flare nut wrench is used to loosen or tighten nuts on the ends of pipes. It is also called a tube wrench or line wrench.Full Answer >
A ratchet wrench makes use of a gear and pawl mechanism to maintain force when spun in a single direction while releasing in the opposite direction. Ratchet wrenches are also commonly called socket wrenches.Full Answer >
Standard American wrench sizes, from the largest to smallest and measured in inches, are 5/8, 19/32, 9/16, 1/2, 7/16, 3/8, 11/32, 5/16, 9/32, 1/4, 7/32, 3/16, 5/32 and 1/8. Wrenches are available in a set or individually.Full Answer >
Although there are over 40 wrench sizes available between 5/16 of an inch and 7 inches, some common sizes, in inches, are 5/16, 3/8, 7/16, 1/2, 9/16 and 5/8. The wrench size is not the same as the bolt size. For example, a bolt with a 5/16-inch diameter requires a half-inch wrench.Full Answer >