Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 98-15859 found under Solder Ring Cap Tub by Timex Corp. The National Stock Number assigned to this part is 6615009051250, and the Federal Supply Class is 6615 Automatic Pilot Mechanisms And Airborne Gyro Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 98-15859.