Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BT223 found under Puller Mechanical by Technic Aviation. The National Stock Number assigned to this part is 5120009325229, and the Federal Supply Class is 5120 Hand Tools Nonedged Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BT223.