Fastenal Company, together with its subsidiaries, engages in the wholesale distribution of industrial and construction supplies in the United States, Canada, Mexico, North America, and internationally.

MSC Industrial Direct Co., Inc., together with its subsidiaries, distributes metalworking and maintenance, repair, and operations (MRO) products and services in the United States, Canada, Mexico, and the United Kingdom.

Ferguson plc distributes plumbing and heating products in the United States and Canada. It offers plumbing and heating solutions to customers in the residential, commercial, civil/infrastructure, and industrial end markets.

W.W. Grainger, Inc. distributes maintenance, repair, and operating (MRO) products and services in the United States, Japan, Canada, the United Kingdom, and internationally.

Watsco, Inc., together with its subsidiaries, distributes air conditioning, heating, refrigeration equipment, and related parts and supplies. The company distributes equipment comprising residential ducted and ductless air conditioners, such as gas, electric, and oil furnaces; commercial air conditioning and heating equipment systems; and other specialized equipment.

Applied Industrial Technologies, Inc. distributes industrial motion, power, control, and automation technology solutions in North America, Australia, New Zealand, and Singapore.

Core & Main, Inc. distributes water, wastewater, storm drainage, and fire protection products and related services to municipalities, private water companies, and professional contractors in the municipal, non-residential, and residential end markets in the United States.

BlueLinx Holdings Inc., together with its subsidiaries, distributes residential and commercial building products in the United States. The company distributes specialty products comprising engineered wood, industrial products, cedar, moulding, siding, metal, and insulation products; and structural products include lumber, plywood, oriented strand boards, rebars and remesh, spruce, and other wood products primarily that are used for structural support in construction projects.

Global Industrial Company, through its subsidiaries, operates as a value-added industrial distributor of industrial and maintenance, repair, and operation (MRO) products in North America.