Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Y63-315880-621 found under Cable Assembly Spec by Gyrodyne Co Of America Inc. The National Stock Number assigned to this part is 6150008677086, and the Federal Supply Class is 6150 Miscellaneous Electric Power And Distribution Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like Y63-315880-621.