Salt bath heat-treating gives hand tools a hard time

摘要

One of America's favorite hand tools is the "Pocket Socket{sup}(tm)," an adjustable wrench designed and manufactured for Sears-Craftsman by Midwest Tool & Cutlery (Sturgis, MI). Production in the first year surpassed 5 million units and has grown at the rate of one million units each year since. The Pocket Socket has an adjustable jaw that provides a non-slip grip on nuts to 1-1/8", and accommodates both SAE and metric sizes. The slender design makes it ideal for hard-to-reach places, and it is easy to carry.