Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M31304 found under Pin Straight Headless by Spectro Inc. The National Stock Number assigned to this part is 5315014455727, and the Federal Supply Class is 5315 Nails Machine Keys And Pins. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like M31304.