Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 287731 found under Pin Straight Headed by Slabe Machine Products Co The. The National Stock Number assigned to this part is 5315005140600, 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 287731.