Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A3S4 found under Loudspeaker Permanent Magnet by Misco Minneapolis Speaker Company. The National Stock Number assigned to this part is 5965006786925, and the Federal Supply Class is 5965 Headsets Handsets Microphones And Speakers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like A3S4.