What is the name of the old fashioned screen window anti theft door lock?

Whether the lock cylinder is round or refers to a general ball lock. If the ball lock is simple, slowly rotate the back ball, when you see the two holes aligned near the middle of the trail near the middle of the ball, use the tip of the lock accessories to press the punch inside the hole, you can pull out the back ball after pressing down, loosen the back cover plate, load the lock body from the outside to the inside through the door hole, and then tighten the cover piece, and install the back ball.

First, which is the best anti-theft door lock cylinder?

1. Anti-theft door lock cylinder level: The anti-theft door lock cylinder used on the market is basically divided into three levels, namely A-level, B-level, and super B-level (also known as C-level). According to the "National Mechanical Lock Standard", the anti-theft door lock cylinder has two levels, A and B, and the super B level is an enhanced version of the B level developed by the entrepreneur. >>>More

It can be exchanged!

If you want to find a good anti-theft lock cylinder, it is recommended that you take a look at CEI's invincible colorful lock cylinder, CEI's colorful lock cylinder has passed the super B level test and the European Union's CE certification! The anti-drilling time is more than 30 minutes, and the anti-technical opening time is more than 270 minutes. CEI multi-color lock adopts the combination of "tenon lock beads + double beads + finger beads embedded with serpentine grooves", triple composite locking mechanism, and builds three anti-theft passes, which form a three-dimensional barrier, which has become the nemesis of technical unlocking. >>>More

The lock needs to be lubricated and maintained frequently, otherwise it will be difficult to open, rust, or even screw the key, or the internal lock block will be stuck and cannot be opened. >>>More

There are the following factors that decide:

The mounting holes of the new security door lock must be the same as the installation holes of the old security door lock to be interchangeable. It is necessary to look at the holes that have been opened in the door, and some holes may not be completely matched. Standard holes are easier to replace. >>>More