Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 89BARESIST0R found under Attenuator Fixed by American Telephone And Telegraph Co. The National Stock Number assigned to this part is 5985005442614, and the Federal Supply Class is 5985 Antennas Waveguides And Related Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 89BARESIST0R.