Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CE221N REV D ITEM NO 34 found under Worm Shaft by Tri Tec Manufacturing Llc. The National Stock Number assigned to this part is 3040016271791, 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 CE221N REV D ITEM NO 34.