Grainger is the undisputed heavyweight in industrial supply, offering over a million products spanning tools, safety equipment, HVAC, plumbing, electrical, and facility maintenance. Free shipping with no minimum and 1-3 day delivery set the standard for industrial supply logistics. The 30-day return policy is standard. The massive catalog means you can source virtually anything industrial from a single vendor. Next-day delivery on many items is genuinely impressive for industrial supply. The website is highly functional with powerful search, filtering, and account management tools. The main criticism is pricing, which can run higher than specialist suppliers for specific categories. No loyalty program exists in the traditional sense, though business accounts receive volume pricing. The shopping experience is optimized for procurement professionals rather than casual consumers. For businesses that value reliability, breadth, and speed in industrial supply, Grainger is the benchmark.