Does your MRO storeroom have a “just in case” bin; the bin where unknown parts are sent for “future” use. It’s a rare plant that doesn’t have such a box, bin, or maybe shelves assigned for that purpose. In nearly every plant we enter, even with advanced technology and more sophisticated tracking capabilities, we still find parts that are decades beyond their usefulness. In one case, we found an unidentified bearing stamped with a date of manufacture as 1956. The equipment it was matched too was undoubtedly long gone.