This is the part that is not attached to the chain.
How to install a chain lock on metal door.
For the door side screws with a length1 8 to1 4 shorter than the thickness of the doorwill give the most strength.
The locks consist of two sides the secured side where the chain is firmly bolted and permanently set then the sliding side where the knob at the other end of the chain can be inserted and slid into place.
Position the lock with the swinging arm portion on the door frame near the edge with the arm extending over the door.
Install a deadbolt lock to a steel door with help from a home improveme.
Adding a deadbolt lock can be a great way to improve the security of your steel door.
As da01 mentioned a good 12 volt drill should manage this just fine if you are using a drill bit designed for metal.
Also if possible use minimum 10 screws butit s always best to take the latch to the hardware store to get the correctscrew sizing.
If you do not have a deadbolt on the door place it about three to six inches above the door handle.
A door chain lock is an additional lock to the standard deadbolt and door handle locks that may already be on your door.
I have had metal doors on my last three houses and all were easy to drill.
I m tring to install a chain lock on the inside of my home.
Move the fixed peg portion on the door face where the swinging arm easily.