Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TA21-424R9E10001B found under Resistor Fixed Wire Wound Noninductive by R H O Engineering Co. The National Stock Number assigned to this part is 5905009601956, 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 TA21-424R9E10001B.