A line goes down at 2 a.m. because a $40 proximity sensor failed. The maintenance tech identifies the part in ten minutes. Procurement spends the next six hours trying to find a supplier who actually has it, can verify the part number against the failed unit, and can get it to the dock before the next shift. That six hours — not the ten minutes of diagnosis — is usually where the real cost of the event lives. This is the problem that MRO distributors are supposed to solve, an