Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WW20J181C found under Resistor Fixed Wire Wound Inductive by Trw Inc. The National Stock Number assigned to this part is 5905005438908, 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 WW20J181C.