Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 503439-001 found under Wiring Harness by Rugged Information Technology Eq. The National Stock Number assigned to this part is 6150013632152, 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 503439-001.