Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ST7M342C27P found under Ring Piston by Monogram Aerospace Fasteners Inc. The National Stock Number assigned to this part is 2805011603722, 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 ST7M342C27P.