Harrington Tool (HTC) is proud to make boring tools in the USA. The company also manufactures an array of custom cutting, drilling, milling, and threading tools. Quality materials, carbide, cobalt, and steel, are essential to crafting its line. HTC offers carbide- and diamond-tipped machine tools, as well as a variety of specialty coated pieces. The endurance lineup is distributed worldwide to a diversity of customers, from aerospace giants Boeing and Raytheon to appliance-maker Whirlpool, automotive OEMs Ford and Toyota, hydraulics kingpin Parker-Hannifin, as well as military contractor General Dynamics, and engine icon Briggs & Stratton. HTC's manufacturing operations are owned and led by Fred T. Harrington.