Quick Answer: What size hole saw do you need for a door knob?

3 Bore the doorknob hole through the face of door using a 2 1/8-inch hole saw; drill halfway through from each side. 4 Use a 1-inch hole saw to bore latch hole in door edge.

What is the standard hole size for a door knob?

The Bore hole is the large diameter hole where the door knob is mounted. The standard sized bore hole is 2 1/8″ in diameter. Through the edge of the door there is a 1″ cross bore that extends from the edge of the door through the bore hole.

Are all door knob holes the same size?

Standard cross bores measure about 1 inch in diameter. The latch bore can be found on the edge of the door, and its standard size is 2 1/8 inches. Also measure the door’s backset, which is the length straight from the middle of the cross bore out to the door’s edge.

What tools do I need to install a door knob?


  1. Drill / Driver.
  2. Screwdriver.
  3. Utility Knife.
  4. Wood Chisel.
  5. Tape Measure.
  6. Hammer.
  7. Sawhorses.
  8. Door Lock Installation Kit / Hole Saw Kit.
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What is the little hole on the side of my door knob for?

This is designed as an emergency way to open interior doors with locks such as a bathroom or bedroom door. It’s called a privacy lock.

What is the standard height of a door handle?

All door handles, pulls, latches, and locks should be installed at least 34 inches from the finished floor. On most people, this means that the door handle will be comfortably situated around their hip area. On the flip side of things, your new door handle should not be higher than 48 inches above the finished floor.

Do doors come with holes for handles?

Most door handles come with a kit and provide a measurement template for you to follow. Following these measurements, using your drill to create the necessary holes, and attaching all the necessary parts into the door frame are all it takes to attach a door handle yourself.

How do I measure for a replacement door knob?

Measure the bore hole.

You’ll need to know the bore hole’s diameter to get the right sized knob. Measure across the circular hole at its widest point, i.e. start at the bottom of the hole and pull the tape until you hit the top of the hole. There’s your diameter.

How do you know what size door knob to get?

To determine the correct backset measurement for your door, you need to measure the distance from the edge of the door to the center of your cross bore. The two standard backset measurements in North America are 2 3/8 inches and 2 3/4 inches.

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Can you use any door knob?

For entry doors, some people will have an easier time remembering a code than carrying a key with them, while others will prefer the key over having to memorize something. It all depends on what works best for you. Other than that, most door knobs should be pretty simple to figure out and use for just about anybody.

Is it hard to change door knobs?

Replacing a doorknob is an easy do-it-yourself project.

Do locksmiths replace door handles?

As well as locks, locksmiths can often also repair or replace other hardware on both doors and windows such as handles, hinges, door closers etc.

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