Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PU-NC12 found under Splitting Tool Nut by Cornwell Quality Tools Co The. The National Stock Number assigned to this part is 5110008036339, and the Federal Supply Class is 5110 Hand Tools Edged Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PU-NC12.