Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 190B20 found under Resistor Fixed Wire Wound Induct by A R F Products Inc. The National Stock Number assigned to this part is 5905002791676, 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 190B20.