Position it about 3 to 6 inches above the deadbolt on your door.
How to install a chain lock on metal door.
If you do not have a deadbolt on the door place it about three to six inches above the door handle.
For the door side screws with a length1 8 to1 4 shorter than the thickness of the doorwill give the most strength.
I have had metal doors on my last three houses and all were easy to drill.
Move the fixed peg portion on the door face where the swinging arm easily.
Adding a deadbolt lock can be a great way to improve the security of your steel door.
This is the part that is not attached to the chain.
Install a deadbolt lock to a steel door with help from a home improveme.
I ve tried millions of things to get a hole in the steel door.
I m tring to install a chain lock on the inside of my home.
As da01 mentioned a good 12 volt drill should manage this just fine if you are using a drill bit designed for metal.
Tape up the template for the lock plate.
Also if possible use minimum 10 screws butit s always best to take the latch to the hardware store to get the correctscrew sizing.