Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WL27 found under Brush Electrical Co by Ucar Carbon Co Inc. The National Stock Number assigned to this part is 5977003216909, 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 WL27.