Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CT55 21.K OHM 1PCT TO found under Resistor Fixed Film by Dale Electronics Inc. The National Stock Number assigned to this part is 5905004320404, and the Federal Supply Class is 5905 Resistors. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CT55 21.K OHM 1PCT TO.