Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 505C3-224 found under Flexible Shaft Machine Electric by Eastman Machine Co. The National Stock Number assigned to this part is 5130015025991, and the Federal Supply Class is 5130 Hand Tools Power Driven. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 505C3-224.