Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BS4-1640PC286035 found under Coupling Shaft Flexible by Warren Pumps Llc. The National Stock Number assigned to this part is 3010002393439, and the Federal Supply Class is 3010 Torque Converters And Speed Changers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BS4-1640PC286035.