Although locksets vary based on function, style, and utility, almost every lockset has the same basic parts. Check out this article to learn the different parts of a lockset with our exploded lockset diagrams, showing what exactly is in your lock, what does each piece do, and how do they all function together?
What is a lockset?
A lockset is the door hardware that combine to making a locking or latching mechanism typically found on a door or other hinged object. The typical components of include, but is not limited to, a variety of complex parts. The door handles, latch type, strike plate, escutcheon (also known as a rose), lock button/turn, mounting plates, and thru bolts are the main parts in a lockset. The lockset body and the door hardware that is associated with it determines the difference between locks. These differences are determined by a door’s functions, how an individual enters andexit the two spaces separated by the door, security, and the handle’s design style.
In this example, we are using one of our more popular Home Hardware Plus lever locks, the DL-LHV Series lever lockset. This door hardware is designed for use on heavy duty commercial applications, is handicap compliant, and features a security mechanism (known as free-wheeling clutch) to ensure its longevity and protection of your space.
Pieces & Parts of a Lockset
The first thing anyone notices about a lockset is its handle. This lockset has a lever handle. There is typically both an inside and an outside lever, but some have alternative door hardware depending on what function you would like your door to have. This varies amongst products, but this one in particular is a universal non-handed lever, meaning that it can go on either side of the door (versus a specified handing).
Behind the lever handle is a piece called the “Rose”, and alternatively called an escutcheon at times depending again on the function and type of lockset that you have. The rose is the circular plate surrounding the door handle that is flush against the door. This rose is meant to protect the inner functioning parts of your door hardware and to keep any unwanted materials outside of the lock. Based on the grade of your door hardware, the rose comes in different depths to accommodate the inside rose lines. Which brings us to our next lockset mechanism. The hardware that sits on the inside of the rose is called the “inside rose line”. Behind this inside rose line is the inside mounting plate. This is the last layer before the core of your lockset. Despite the appearance of the diagram, the inside rose line and the inside mounting plate all sit very comfortably in the rose, creating a very condensed and important part of your locksets functioning power.
At the center of your lockset is the lock body assembly. This is the part of your door hardware that is going to make the turning function of your lock possible (pretty important, right?) The lockset body goes through the rose, the rose line, and the inside mounting plate to connect to the door handle.
This is the heart of your door hardware!
The body assembly also is the holder of the latch, which connects to the lockset and makes contact with the door frame. This is what secures the door closed when you close it. This latch comes in varied sizes and latch types, but they all have the same general purpose – to keep that door shut if there is not an outside force acting on it. Also in the lock body assembly are small bits of door hardware called “thru bolts”. No, this is not a typo, these thru bolts are small but make life so much easier. The purpose of these bolts is to prevent chassis (or the base frame of the wheeled conveyance) rotation and to ensure that your door lock is properly aligned.
When working your way out from the center of the door lock in the opposite direction, the composition is basically the same. You go from the lock body assembly to the outside mounting plate, then to the outside rose and finally the outside lever. There is one slight difference from the ‘inside rose’ and the ‘outside rose’. this difference is that in this instance, the outside lever is also threaded. The threaded rose aligns your door hardware for smooth fixation along the door itself, and just like the inside rose it protects the inner functioning parts of your door hardware.
Included above is a diagram of an exploded lockset to help you visualize everything just discussed. The best way to learn the parts of your lockset is truly to figure out details of your door, order a lock, and explore with it yourself! If you follow this link you can see the variety of locksets that we provide, or go to our blog Hardware Tips & Tricks to learn about lockset grades, installation, and more.