In short: #10 — "Recurring B2B sales at massive scale." Maintenance, repair and operating (MRO) supplies — "everything from safety goggles to industrial motors" — to millions of businesses and institutions globally. "Their huge size and wide distribution network keep costs low. They also carry the largest selection of products, making them a one-stop shop for complex operations. Grainger is built deeply into B2B supply chains and corporate facility maintenance. Physical businesses will always need tools, spare parts, and safety equipment to keep their facilities running."
Grainger supplies the things a building or a factory consumes to keep operating — safety goggles, gloves, fasteners, motors, cleaning supplies — to millions of businesses and institutions. The industry calls this MRO: maintenance, repair and operating supplies.
Nobody chooses a supplier of industrial gloves for excitement; they choose the one that has everything in stock and can deliver tomorrow. Grainger's scale gives it both the widest catalogue and the lowest cost of getting an item to a customer, which makes it the default single source for organisations that would rather place one order than twenty. It is also embedded in customers' purchasing systems, so the buying happens automatically. As long as physical businesses exist, they will keep consuming these items, and the reorder is habitual rather than considered.
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