Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F540044 found under Ring by Actuant Corporation. The National Stock Number assigned to this part is 5365011080431, and the Federal Supply Class is 5365 Bushings Rings Shims And Spacers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like F540044.