Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RCR20G2R4JS found under Resistor Fixed Composition by J F C Electronics Inc. The National Stock Number assigned to this part is 5905010642906, 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 RCR20G2R4JS.