Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 50421140 found under Delay Line by University Of Massachusetts. The National Stock Number assigned to this part is 5999012491885, and the Federal Supply Class is 5999 Miscellaneous Electrical And Electronic Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 50421140.