Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RELEASE6522 found under Coupler Optoelectronic by Electronic Industries Inc. The National Stock Number assigned to this part is 5980010679512, and the Federal Supply Class is 5980 Optoelectrical Devices And Associated Hardware. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RELEASE6522.