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Double bore hole If your door has two or three bore holes, it’s almost certainly an exterior door. Simply put, the top hole in a double bore hole door is for your deadbolt and the bottom is for your knob or lever.
What is a bore on door?
Bore holes are the holes in the door that house your door hardware and allow it to be installed. The latch bore, also known as the edge bore, is the hole drilled from the side of the door into the cross bore to allow the latch of the lock to be installed and to accommodate the sliding of the deadbolt.
What are the different types of door handles?
There are three main types of door handles: lever handles, pull handles and door knobs.
What size is the bore for a door latch?
The latch bore is the small hole on the edge of the door for the latch itself. The standard measurement for a bore hole is 2 1/8 inch in diameter and the standard measurement of a cross bore is 1 inch in diameter.
How do you measure a door bore?
Measure the bore hole. 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.
Why do door latches have two parts?
The main latch is supposed to fall into the strike hole on the door frame, the little part is supposed to sit on the surface of the strike (not fall into the hole). This feature is meant to keep someone from retracting the latch from the outside of the door with a credit card or other device.
What is the little hole on the side of my door knob for?
Many door knobs have a hole on the side near the narrow end that is close to the door. This is a release so the knob can be removed. Pressing a paperclip into the hole will allow the knob to be pulled off.
What are push door handles called?
A crash bar (also known as a panic exit device, panic bar, or push bar) is a type of door opening mechanism which allows users to open a door by pushing a bar.
Can you mix levers and knobs?
Firstly, most of the knobs or handles in your home will match. However, on the interior of rooms like your bathroom and kitchen, the doorknob will have a different finish. Yes, it will need to be the same design but you can use two different colors – one for inside and the other for outside the room.
How do I know what door handle to buy?
Measure from the edge of the door to the centre of the door knob or handle. The industry standards are usually either 44mm / 57mm / 82mm / 107mm / 130mm. Ideally you will try and choose the backset measurement that sites the door handle in the middle of the door stile.
Do doorknobs have sizes?
Choosing the right door knob is more than simply a matter of appearance. The standard size for a door knob diameter is either 2 3/8 inches or 2 3/4 inches and these knobs will usually fit doors that are anywhere between 1 3/8 inches to 1 3/4 inches thick.
What does backset mean?
The backset is the distance from the edge of the door to the spindle mechanism on the latch. Usually for a 63mm case measurement it will have a 44mm backset and for a 76mm case measurement will have a 65mm backset. The backset you choose is where your door knobs will sit on the door (where the spindle goes through).
Are there different size door locks?
In the United States, there are two common backsets for residential door locks: 2 3/8 inches and 2 3/4 inches. Pack your locks with a 2-3/8-inch or 2-3/4-inch latch, depending on which backset you specify.
Are door handles universal?
Door levers are left-handed, right-handed or universal. To determine what you need, look at the door from outside the house or room. If the hinges are on the left, look for a left-handed or universal lever. If the hinges are on the right, you need a right-handed or universal model.
Can I use an interior door knob on an exterior door?
Doorknobs and locksets intended for interior use may have no water seal and may use a thinner protective coating. Doorknobs and locks intended for exterior use could easily be used indoors, but interior sets may quickly leak, corrode, or lose their finish if exposed outdoors.
What size is a deadbolt hole?
The deadbolt lock set will come with a template to help you with measurements. Be sure to use the correct size drill bits specified in the lock set instructions, though most standard deadbolts require a 2 1/8-inch hole saw for the lock bodies and a 1-inch spade bit for the sliding bolt assembly.
What is a door plunger?
“Deadlocking plunger” (also called “deadlatch plunger” or “deadlock plunger”) is the name of a very important piece of a door lock assembly; it keeps a locked door from being opened with a small screwdriver or credit card.
What is a spring latch lock?
Spring latches usually fall into one of two categories, as follows: Once the bolt passes a certain point, it will fully extend and quickly lock into the strike plate due to the pressure being released from the spring, securing the door and holding it closed.
What do you call the parts of a door lock?
The main parts of a door lock are the cylinder, bolt, box and strike plate. It’s useful for any DIY-er to know how things around the home operate.
What’s the little hole next to the keyhole?
The hole is there allow water and such to “drain” out of. If water gets into the lock and freezes without expansion room it could damage the lock or cause it to seize until it thaws.