Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M31000 found under Plate Surface by Spectro Scientific Inc. The National Stock Number assigned to this part is 5220014287296, and the Federal Supply Class is 5220 Inspection Gages And Precision Layout Tools. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like M31000.