Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A1-04-0164 found under Filter Low Pass by Acr Electronics Inc. The National Stock Number assigned to this part is 5915011913017, 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 A1-04-0164.