Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 40D74 found under Nut Plain Knurled by Allied Devices Corp. The National Stock Number assigned to this part is 5310009571224, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 40D74.