W.W. Grainger, Inc. is an industrial distribution company specializing in the supply of maintenance, repair, and operating (MRO) products and services. The company operates primarily in North America,... W.W. Grainger, Inc. is an industrial distribution company specializing in the supply of maintenance, repair, and operating (MRO) products and services. The company operates primarily in North America, Japan, and the United Kingdom and serves over 4.5 million customers globally, ranging from small businesses to large corporations and government institutions. Grainger’s offerings include an extensive portfolio—more than 2 million products in safety, security, material handling, storage equipment, pumps, plumbing, cleaning, and metalworking—delivered through both high-touch solutions and digital platforms. Their digital channels, such as Grainger.com, Zoro.com, and MonotaRO.com, provide access to millions of additional products and support streamlined procurement for business clients. Alongside product distribution, Grainger delivers technical support, inventory management, and supply chain solutions to institutions across the commercial, healthcare, and manufacturing sectors. Founded in 1927 and headquartered in Lake Forest, Illinois, the company is recognized as a Fortune 500 leader in industrial supplies, known for innovative service models, significant scale, and a longstanding focus on operational efficiency and customer service excellence.