Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number OK 545 HB found under Coupling Shaft Flexible by Skf Usa Inc. The National Stock Number assigned to this part is 3010013513099, 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 OK 545 HB.