Ms13986-one-sleeve-bearing-element-by-military services-benchmarks-of-nsn-3120005556112-3120-00-555-6112-2/ https://www.nsnpartlookup.com/part-lookup/ms13986-1-sleeve-bearing-part-by-military-standards-of-nsn-3120005556112-3120-00-555-6112-2/