ITW Shakeproof Group Stampings

ITW Shakeproof Group is the largest, most diverse and uniquely tooled producer of stampings products in the world.

Since its 1923 invention of the Twisted Tooth Lock Washer, Shakeproof has continued to invent products that revolutionized the stampings industry. Such product inventions as the Square Cones, Spring Washers, Internal/External Lock Washers and Shaft Retainers are the finest anti-vibration, anti-loosening, mechanical fastening devices available today.