Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W9712-31 found under Resistor Variable Wire Wound Non by Hobart Brothers Company. The National Stock Number assigned to this part is 5905009276766, and the Federal Supply Class is 5905 Resistors. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like W9712-31.