Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 604-211B found under Memory Portable Solid State by Calumet Photographic Inc. The National Stock Number assigned to this part is 7050016081549, and the Federal Supply Class is 7050 Adp Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 604-211B.