Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 40117 found under Tappet Hydraulic Unit by Crown Controls Corp. The National Stock Number assigned to this part is 3920010038800, and the Federal Supply Class is 3920 Material Handling Equipment Nonself-Propelled. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 40117.