7-pin green operating construction key is a specialized tool designed for use with small format interchangeable core (sfic) lock systems. this key is used during the construction phase of a building project to allow access to doors before the permanent master key system is installed. it features a 7-pin configuration and is identified by its green color, which distinguishes it from other keys in a standard keying system. the key measures 2.17" in length, 0.98" in width, and 0.12" in height. it is a standard accessory for door hardware maintenance and construction site security management. this operating key allows for the temporary operation of the lock cylinder, facilitating access for contractors and personnel during the building process. it is compatible with standard sfic cylinders used in various door hardware and security systems. the key is constructed to provide a reliable method for managing access before the final master key system is implemented, ensuring that the lock remains functional throughout the construction period. this key is intended for use in commercial and residential door hardware applications where temporary access is required during the building phase.