Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6640217-29 found under Screw Adjusting Valve Tappet by Conagra Grocery Products Company. The National Stock Number assigned to this part is 2805015362776, and the Federal Supply Class is 2805 Gasoline Reciprocating Engines Except Aircraft And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 6640217-29.