Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A1-04-0153 found under Microphone Element by Acr Electronics Inc. The National Stock Number assigned to this part is 5965000068004, 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 A1-04-0153.