Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2810 20 IN. STROKE 8 TO 1 RATIO found under Jactuator Ball Screw by Yale Industrial Products Inc. The National Stock Number assigned to this part is 3010001627412, 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 2810 20 IN. STROKE 8 TO 1 RATIO.