Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F3919-11 found under Shaft Shouldered by Toolex Inc. The National Stock Number assigned to this part is 3040006522386, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like F3919-11.