Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number IT5204D4 found under Flaring Die Fastener Installatio by Avibank Mfg Inc. The National Stock Number assigned to this part is 5120013838001, 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 IT5204D4.