Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MMS158 found under Bar Metal by Monogram Aerospace Fasteners Inc. The National Stock Number assigned to this part is 9530004924329, and the Federal Supply Class is 9530 Bars And Rods Nonferrous Base Metal. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MMS158.