Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GR28 20 found under Fin Assembly Regula by Lucas Aerospace Power Equipment. The National Stock Number assigned to this part is 6110002136626, and the Federal Supply Class is 6110 Electrical Control Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GR28 20.