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How to Determine the Lock Brand From the Key

Door locks are manipulated to open or close with brass keys. Keys work by duplicating the interior of a lock's millings and grooves. This produces the metal "hills and valleys" we see on keys. Most of them are stamped with the manufacturer's name and/or codes.

Keys have unique identifiers stamped on them.

Door locks are manipulated to open or close with brass keys.  Keys work by duplicating the interior of a lock's millings and grooves.

This produces the metal "hills and valleys" we see on keys.  Most of them are stamped with the manufacturer's name and/or codes.

Each code is unique to the particular key model and helps locksmiths identify the lock brand if unknown. 

  1. Look on the head or bow of the key; this is the large, blunt end of the key. Lock makers often stamp their names on the bow or head of the key.
  2. Take the key to a locksmith or hardware store. Both have reference books that identify keys and the lock brand.
  3. Ask the locksmith or hardware store operator to make a duplicate of the key. The locksmith or proprietor uses his lock and key template guide to determine the type of lock, and he refers to his reference book to find the manufacturer.
  4. Tip

    If the key is a duplicate, look at the actual lock for the manufacturer's name. Another option is to take the key to a forensics laboratory. Most have extensive databases on locks and keys.

Tips

  • If the key is a duplicate, look at the actual lock for the manufacturer's name.
  • Another option is to take the key to a forensics laboratory. Most have extensive databases on locks and keys.

About the Author

Owen Richason grew up working in his family's small contracting business. He later became an outplacement consultant, then a retail business consultant. Richason is a former personal finance and business writer for "Tampa Bay Business and Financier." He now writes for various publications, websites and blogs.

Photo Credits

  • key image by Bosko Martinovic from Fotolia.com
  • key image by Bosko Martinovic from Fotolia.com