Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2CN7B found under Locknut Pump Impell by Pentair Pump Group Inc. The National Stock Number assigned to this part is 5310004454431, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2CN7B.