W.w. Grainger, Inc.
A broad-line distributor of maintenance, repair, and operating (MRO) supplies—the motors, fasteners, tools, and parts that keep factories and facilities running. Grainger serves over four million customers across North America and Japan, selling roughly two million products through its High-Touch Solutions arm and online platforms like Zoro and MonotaRO. Founded in Chicago in 1927 by electrical engineer William Wallace Grainger, the company grew out of a reliable supply of electric motors, and its very first catalog was a pocket-sized pamphlet called the MotorBook.