Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5Y300 found under Bearing Set Connect by Napco International Llc. The National Stock Number assigned to this part is 2805007413418, 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 5Y300.