Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B1212 found under Delay Line by I T I Electronics Inc. The National Stock Number assigned to this part is 5999003905861, 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 B1212.