Door locks need a hole for the keys to be inserted. Is there anything known as standard door lock hole size? There is no doubt that most doors for offices and homes are made with the help of single door hole. In this article we will be going over the door lock holes and what to expect.

Standard Door Lock Hole Size

If you’ve decided to change your locks over rekeying, you’ll want to consider the hole size. A bore hole is where the door job is mounted. The sizes vary depending on various factors and could be anything from, 2.1/8 inches in diameter and more. There could be bore hole sizes that can be smaller or bigger. Let us get to know more about it over the next few lines. 

Some Basic Information About Lock Hole Sizes

When we refer to bore hole, we are talking about the large diameter hole on which the door knob is generally mounted. The door has a bore that is around 1 inch in length and it extends from the door edge and goes through the bore hole. The cross bore is the place where the latch has to be installed. There are many types of door locks, which can influence the lock hole size as well.

LatchesStandard Door Lock Hole Size

When dealing with door locks and handles, there are three different types of latches, and the most common ones are the drive-in latches. They are popular because they are quite easy to install. The cross bore on which the latches are to be installed will have only a 1 inch cross bore. The latch should be installed and it has to be slid into the cross bore and once it is tapped it places itself gently. If needed a hammer or mallet could be used. 

Faceplate Latches

These types of rounded corner latches are quite popular. The good thing about these latches is that they give the door a quality look and they are also very secure. They keep the door secured quite well. Though they come in many sizes, generally the faceplates are around 2.1/4 inches in height and the width is around 1/8 inch radius as far as the corners are concerned. They also make us of router jig for preparing the door. This will make it easier for you to install the latch. In case the prep for the door is lacking, and in case you still want a faceplate latch, it would be advisable for you to go in for locks with various square corner faceplates. They are easy to chisel and the corners also could be quite well-rounded. 


When it comes to preparing the door for lock hole, there are a few things you must bear in mind. You must keep in mind that deadbolts do not come with a drive in latch, though there could be some exceptions to the role. They are generally prepared for installing a knob and this is done with the help of a drive in latch. The deadbolt hole also has to be prepared taking into account the size of the faceplate. There could be a few doors that need preparation with the help of a drive-in latch, while the deadbolt hole may be prepared for the faceplate.



Although rekeying is a great option, sometimes installing a new lock is ideal. To sum this up, the standard door lock hole size can be different for different types of locks, doors and other such attributes. At the same time, you also could take inputs from locksmith professionals to help decide which is the best way forward as far as hole size, whether it is special locks or conventional latches.