Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R2020YG1-1-4 found under Label by Avery Dennison Corporation. The National Stock Number assigned to this part is 7530012035817, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like R2020YG1-1-4.