McMaster Supply Company

McMaster Supply Company is a private, family-owned supplier to industrial and commercial facilities worldwide, specializing in Maintenance, Repair and Operations (MRO) materials and supplies. McMaster maintains over 555,000 products in a catalog offering a variety of mechanical, electrical, plumbing, and utility hardware not usually located from a single source.

McMaster Supply Company engages in the distribution of industrial products. It offers abrading and polishing equipment, building and grounds, door and equipment hardware, electrical and lighting equipment, fabricating equipment, fastening and joining equipment, filtration products, flow and level control products, furniture and storage equipment, and hand tools. The company also offers heating and cooling, lubricating, material handling, and measuring and inspecting equipment; office supplies and signs; and plumbing and janitorial, power transmission, pressure and temperature control, and pulling and lifting equipment. In addition, it offers raw materials, protective equipment, and sawing and cutting equipment; sealing, shipping, and suspending equipment; and tubing, hose, pipe, and fittings. The company was founded in 1901 and is based in Elmhurst, Illinois.