Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 49B6564 found under Bolt Ring by Metadure Parts And Sales Inc. The National Stock Number assigned to this part is 5306005860844, and the Federal Supply Class is 5306 Bolts. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 49B6564.