Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 01-025-0018-3 PIECE 1-1 found under Coupling by Timken Gears And Services Inc. The National Stock Number assigned to this part is 5342011323008, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 01-025-0018-3 PIECE 1-1.