Master Lock Combination Nightwatch Single Cylinder Deadbolt

Use the Master Lock Combination Nightwatch deadbolt when you prefer to use a code to enter instead of a key, or when giving everyone a key increases the chance of unauthorized persons can make copies. Unlock the deadbolt with a simple 3 digit code, just like a combination padlock. Installs easily with a screwdriver and replaces most standard deadbolts without any modification to the door. The Nightwatch mechanism consists of a simple mechanical single cylinder (key from one side) deadbolt within the thumbturn mechanism. When Nightwatch is engaged, the outside assembly cannot be used to unlock the deadbolt, not by your regular key, by any copied key or by the combination thus preventing anyone from entering your home through that door while you are there even if they have a key or know the combination. The inside thumbturn can be turned to lock or unlock the deadbolt. Exceeds ANSI Grade 2 standards.

• Six way adjustable bolt 2-3/8" or 2-3/4" backset - square, radius or drive-in mechanism.
• Anti pry collar prevents prying and simplifies installation.
• Concealed mounting screws for better appearance and to prevent tampering.
• Silvabond anti-microbial protected finish.
• Fits doors up to 2" thick.
• Full 1" solid core bolt.
• BumpStop technology is a special stainless steel pin driver that prevents lock bumping and is standard in all Grade 2 Master Lock products.

Available in Polished Brass, Antique Brass or Satin Nickel finishes.