Arthur C. Newby, Edward C. Fletcher and Glenn Howe, with a $5,000 investment, started what was to become the Diamond Chain Company by forming The Indianapolis Chain & Stamping Company on December 24, 1890. They took the diamond as their trademark because it symbolized perfection and served as a constant reminder of their endeavor.

In its humble beginnings, The Indianapolis Chain & Stamping Company (IC&SC) specialized in bicycle chain. As one of the first companies in the United States to produce bicycle chain, IC&SC prospered, outgrowing its original quarters and moving to larger facilities in 1892.

1901, when the bicycle chain business slumped, IC&SC rebounded by developing and introducing to industry a twin-roller roller chain.

From December 17, 1903, when Diamond chain was used on the Wright brothers' first flying machine, to the present, Diamond Chain has been a major supplier of chain not just for aircraft, but for power transmission and product conveying throughout manufacturing industries.

In 1950 Diamond Chain was acquired by American Steel Foundries, Inc., the largest steel foundry in the world, and in 1962 the name of the parent company was changed to AMSTED Industries Incorporated.

During Diamond's many years of producing the highest quality roller chain they have tested, examined and discovered many developments which have significantly increased the performance of their roller chains. These developments have rarely become product lines but rather, product improvements, which have been incorporated into daily production so that all customers can benefit, without special requests or premium prices.

In today's environment, Diamond, while focusing on the increased use of technology, still operates under the same inventive, grassroots philosophy it was founded on, providing its customers with a high-quality product possessing the best balance of performance, reliability, price and delivery that meet or exceed their requirements.