Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D2-9340PC21 found under Worm Shaft by U S M Corp. The National Stock Number assigned to this part is 3040003859483, 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 D2-9340PC21.