Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CZM-1B6 found under by Buy Fire Alarm Parts Inc. The National Stock Number assigned to this part is 5963015355706, and the Federal Supply Class is 5963 Electronic Modules. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CZM-1B6.