Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SA21-26R1D found under Resistor Fixed Wire Wound Induct by Tel Labs Inc. The National Stock Number assigned to this part is 5905003255215, 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 SA21-26R1D.