Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S6140-66611-005 found under Bell Crank by Rotair Industries Inc. The National Stock Number assigned to this part is 3040000031494, 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 S6140-66611-005.