Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 15642 And 15643MO found under Universal Joint Gea by Elliott Company. The National Stock Number assigned to this part is 3010013257059, 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 15642 And 15643MO.