Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 85031B found under Calibration Kit by Agilent Technologies. The National Stock Number assigned to this part is 5999012607350, 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 85031B.