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The BEST 1A1K1KS473KS800 is a standard 7-pin key blank cut to the K keyway profile, designed for use with BEST interchangeable core and masterkey locking systems. This blank serves as the starting point for key duplication or new key creation within compatible BEST lock cylinders. Locksmiths, security integrators, and facilities maintenance technicians use this blank when servicing or expanding access control systems that rely on the KS473 keyway specification. Sold individually, it is sized at 4.5 inches in length, 3.3 inches in width, and 2.4 inches in height as packaged.
This key blank is appropriate for commercial and institutional applications where BEST interchangeable core hardware is installed. Typical environments include schools, hospitals, government facilities, and office buildings that rely on masterkey or restricted-keyway systems for access control. The K keyway designation and 7-pin configuration are specific to the BEST KS473 keyway series. Installation and duplication should be performed by a qualified locksmith or credentialed security professional using appropriate key cutting equipment.
Designed for use with BEST interchangeable core and masterkey locking systems using the KS473 K keyway specification. Confirm keyway and pin count match existing cylinder specifications before cutting.
Key blanks should be cut and installed by a licensed locksmith or qualified security professional. Verify the keyway profile and pin count against the target lock cylinder before cutting to avoid unusable keys. Follow all applicable facility security protocols when duplicating restricted keyway blanks.
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