Fastenal is the only industrial distributor that has successfully embedded its supply chain inside customer factories at scale — 2,000+ Onsite locations and 136,600+ FMI devices create physical switching costs that no competitor (including Amazon Business) can replicate through e-commerce alone. The company is gaining share in a $450B+ MRO market growing low-single digits by converting traditional branch-based distribution into technology-enabled, customer-embedded inventory management, with 61.4% of FY2025 sales flowing through digital channels (62.4% as of December 2025). Near-term headwinds from tariff uncertainty and ISM contraction below 50 are real but cyclical, while the structural shift toward embedded distribution is secular and compounding.