Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B15345B-3R found under Tube Return by Beaver Aerospace. The National Stock Number assigned to this part is 1680012176519, and the Federal Supply Class is 1680 Miscellaneous Aircraft Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like B15345B-3R.