Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BL5220-5-3 found under Rivet Blind by Satair A S. The National Stock Number assigned to this part is 5320013071784, and the Federal Supply Class is 5320 Rivets. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BL5220-5-3.