box wrench


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box wrench

[′bäks ‚rench]
(engineering)
A closed-end wrench designed to fit a variety of sizes and shapes of bolt heads and nuts.

box wrench

A wrench, usually double-ended, that has a closed socket which fits over the head of a bolt or a nut.
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The Leatherman Tread is crafted of high strength, corrosion resistant 17-4 stainless steel links that include two to three functional tools each, making a total of 25 usable features like box wrenches and screwdrivers available at a moment's notice.
ASME B107.9-20XX, Box Wrenches Double Head (Inch and Metric Series).
Used and abused in tests, each tool outperformed 12 other sockets and/or wrenches of the same size: short, regular, and long box wrenches; and shallow, semi-deep, and deep sockets with 6- and 12-point design in each socket.
Finally, be sure you have sockets or box wrenches that fit the square-headed drain plugs in your vehicle's engine oil pan and transmission.