Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GRADE619 found under Carbon Stock Electr by Ucar Carbon Co Inc. The National Stock Number assigned to this part is 5977009516639, and the Federal Supply Class is 5977 Electrical Contact Brushes And Electrodes. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GRADE619.