ITW Shakeproof (http://www.itwshakeproof.com) is a division of Illinois Tool Works, Inc. (NYSE: ITW), a diversified manufacturer of highly engineered components and industrial systems with $16 Billion in revenues. ITW Shakeproof was formed in 1923 upon the invention of the Shakeproof twisted tooth lockwasher. Over the last 86 years, Shakeproof inventions have become industry standards such as KEPS nuts and SEMS screws. ITW Shakeproof currently offers a full range of internally and externally threaded metal fasteners across a broad size range.
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