Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 05-0728-51 found under Jackscrewelectrical Connector by Ultrax Aerospace Inc. The National Stock Number assigned to this part is 5935016746662, and the Federal Supply Class is 5935 Connectors Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 05-0728-51.