Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SP55372 found under Brush Electrical Contact by Stackpole Corp The. The National Stock Number assigned to this part is 5977009166315, 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 SP55372.