Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 13544 found under Nutplainround by O F Mossberg And Sonsincorporated. The National Stock Number assigned to this part is 5310016910103, 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 13544.