Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KP500B found under Punch Knockout Punch by Gb Electrical Inc. The National Stock Number assigned to this part is 5110014740090, 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 KP500B.