Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PA-6564 found under Bearing Ball by Acco Babcock Inc. The National Stock Number assigned to this part is 3110011322878, and the Federal Supply Class is 3110 Bearings Antifriction Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PA-6564.