What to do if the screws of the old fashioned anti theft door lock are loose

Loosening is caused by wear and tear after a long period of use, as long as the handle does not fall off, it can still be used, it is recommended to replace the new stainless steel handle, which is not easy to wear.

Abstract Hello, there will be a lock cylinder inside the door lock of each security door, if the lock of the security door is broken, and you don't want to replace the whole door, then you can use some tools to disassemble the lock, find the lock cylinder inside, that is, the one next to the deadbolt, that is, the lock cylinder, unscrew it, re-open a lock cylinder with similar specifications and replace it, and its price is not very expensive. >>>More

Since the door frame is loose, it proves that the expansion screw must be loose, and the screw can be tightened first for wall treatment. If you deal with the wall directly, it will fall off after that.

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