Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MLS-9-30-50D found under Filter Low Pass by Mu Del Electronics Inc. The National Stock Number assigned to this part is 5915010740077, and the Federal Supply Class is 5915 Filters And Networks. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MLS-9-30-50D.