Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MSA1SIZE2 found under Muffler Exhaust by Beaird Industries Inc. The National Stock Number assigned to this part is 2990005727250, and the Federal Supply Class is 2990 Miscellaneous Engine Accessories Nonaircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MSA1SIZE2.