Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3XSK8720-63-5-16 found under Shaft Assy by Hawker Beechcraft. The National Stock Number assigned to this part is 3040000980213, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3XSK8720-63-5-16.