The ND Series is ANSI/BHMA Grade 1 certified and performs beyond the Grade 1 standards. The Schlage ND is regularly used in healthcare, education, government, office, retail, and other commercial applications. Interchangeable core users can enjoy the convenience of fast rekeying without having to disassemble the lock. This feature is very useful in applications where a high frequency of core changes are needed. ANSI Function F86 – Outside lever is always locked; Entrance by key only – Inside lever is always unlocked.