Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2640-682X1 PC27 found under Wrench Valve by Guill Tool And Engineering Co Inc. The National Stock Number assigned to this part is 5120008780624, and the Federal Supply Class is 5120 Hand Tools Nonedged Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2640-682X1 PC27.