Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 503880-1 found under Wire Rope Assembly Single Leg by Telephonics Corporation. The National Stock Number assigned to this part is 4010013448325, and the Federal Supply Class is 4010 Chain And Wire Rope. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 503880-1.