Parts Of A Door Knob: Names & Diagrams

Key Takeaways

• The main parts of a door knob include the knob, spindle, latch, strike plate, and lock cylinder.
• Exterior and interior components work together to open and close the door securely.
• Different types of door knobs include traditional knobs and lever handles.
• At Panda Windows & Doors, we provide quality doors such as sliding, hinged, pivot, and folding.

Core Parts Of A Door Knob (External & Internal)

A door knob is a complex structure with many components like a spindle, borehole, and latch assembly.

External Components

• Knob or Handle: This is the part you see and use every day! Be it a classic round knob or a sleek lever handle, it’s designed for easy operation and style.
• Rosette or Backplate: It covers up the mounting hardware to give the knob a polished and stable look.
• Strike Plate: Mounted on the door frame, the strike plate is where the latch bolt fits snugly when the door is closed to keep it securely shut.
• Keyhole (if applicable): For doors with keyed locks, this is the slot where you insert the key to lock or unlock the door.

Internal Components

• Spindle: The spindle links the knobs or handles on both sides of the door. When you turn the knob, the spindle rotates to retract the latch.
• Latch Assembly: This part keeps your door closed when it’s supposed to. The latch bolt extends into the strike plate to secure the door in place.
• Deadbolt (if applicable): A deadbolt is a heavy-duty locking mechanism that extends deeper into the door frame.
• Springs: Springs make sure the latch retracts smoothly when you turn the knob.
• Lock Button or Thumb turn (if applicable): This is the little button or turn knob inside the room. It locks the door without a key.
• Mounting Plate: It secures the internal components and attaches them to the door.
• Set Screws: These small screws hold the knob assembly in place so that it stays secure during use.

Founded in 1991, Panda Windows & Doors specializes in state-of-the-art custom glass wall systems for both residential and commercial spaces through Panda Windows & Doors. Operating from our manufacturing facility in Las Vegas, Nevada, we have been at the forefront of innovation for over 30 years. Our extensive product lineup includes over 80 high-end offerings, such as pivot doors, French doors, folding doors, lift & slides, multi-slides, horizontal sliding walls, and operable windows. These systems are available in materials like aluminum, steel, stainless steel, bronze, solid wood, and aluminum-wood clad.

We are renowned for our award-winning designs, engineering solutions, and fast lead times, delivering in just 6-10 weeks to customers throughout the U.S. and Caribbean. Trusted by leading architectural firms and glaziers nationwide, we stand as the premier manufacturer of custom luxury windows and doors in the United States.

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How Door Knob Parts Work Together

When you grasp and turn a door knob:

• The external knob rotates, which causes the spindle to turn.
• As the spindle rotates, it engages with the latch bolt, retracting it from its extended position within the strike plate.
• The spring mechanism allows for this retraction and then resets automatically when you release the knob.
• If present, turning a keyed lock or thumb turn engages or disengages additional security features.

Read More: Parts of a Window: Names & Diagrams

Types Of Door Knobs

1. Dummy Door Knobs: Dummy knobs don’t turn or latch and are perfect for decorative purposes, like on closet doors or cabinets.
2. Passage Door Knobs: These are for interior doors where privacy isn’t a concern, like hallways or closet doors. They operate with a latch but do not lock.
3. Privacy Door Knobs: They are perfect for bathrooms or bedrooms where you need some privacy but no heavy-duty security.
4. Keyed Entry Door Knobs: These are your go-to for exterior doors that need to keep unwanted visitors out.
5. Keypad Handlesets: These high-tech options operated with a pin code are great for convenience and security - ideal for exterior doors.
6. Lever Handles: A modern twist on door knobs, these are great for ease of use and often seen in commercial spaces.

Read More: Parts of a Door: Names & Diagrams

Choose Panda Windows & Doors For Your Custom Designs

We provide quality doors and windows that are long-lasting and energy-efficient.

Overview of Panda Windows & Doors

We are a custom windows and doors manufacturer, headquartered in Las Vegas, Nevada. Founded in 1991, our aim is to design elegant and highly engineered products for your home.

What Makes Panda Windows & Doors Stand Out

1. Custom Solutions: You can choose from a variety of materials, designs, and finishes to create the perfect doors for your home.
2. Award-Winning Designs: Our products have received accolades for innovation and quality.
3. High-Quality Materials: We use high-quality materials such as aluminum, stainless steel, and wood for strength and visual appeal.
4. Energy Efficiency: Our windows and doors are LEED® and Title 24 compliant and designed to be energy efficient.

Reach out to us to learn more about our products and get a free quote.

Frequently Asked Questions (FAQs)

Do all door knobs fit all doors?

No, door knobs come in various sizes and designs. It’s important to verify the details such as door thickness and the backset dimensions for perfect fit.

What is the backset of a door knob?

The backset is the distance from the door edge to the center of the hole where the doorknob is installed. Residential backsets are most commonly 2 3/8 inches or 2 3/4 inches.

Can I install a door knob by myself?

Indeed, using simple tools - such as a screwdriver and drill (optional) - most homeowners can fit a door knob themselves by following the manufacturer's manual.

How do I choose the right door knob?

Determine the appropriate knob based on the type of door (interior or exterior), desired locking mechanism, style preference, and required dimensions (such as backset and hole size).

What types of products do you provide?

We have a variety of custom-made windows and doors such as sliding, folding, and pivot systems. Click here to learn more about window options and here for door options.