Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 31980121 found under Nonelectrical Wire by Msc Industrial Direct Co Inc. The National Stock Number assigned to this part is 9505016065542, and the Federal Supply Class is 9505 Wire Nonelectrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 31980121.