Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1221917 found under Linkage Assy Collet by Winslow Aerospace Tool Subsidiary. The National Stock Number assigned to this part is 5130004014664, 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 1221917.