Captive panel screws are also called anti-falling screws and part thread screws. The name is different, the product is the same. It is by adding a section of small rod(screw bottom with thread, the middle is a thin rod, and the rod diameter is less than the thread diameter), through the thin rod to achieve the effect of anti-falling off.

When the captive panel screw is accidentally broken in the screw hole but the hole is not deep, you can go to the hardware store to buy the screw extracter, and then auxiliary needle nose pliers, so that the screw can be taken out, and the impact on the hole is not large. However, if the screw is broken to a deep screw hole, the screw cannot be seen by the eyes, advised you to abandon the screw hole and drill a hole on the device.

When the screw rusts, do not use a wrench to unscrew the screw forcibly, This operation will cause the screw to be broken, and even the wrench will be broken. At this time, you can use a wrench and a hammer, gently tap the handle of the wrench with the hammer, and when the rusty screw vibrates, you can unscrew the screw easily.

If the rust of the screw is very serious, the use of vibration can not be screwed off, at this time, you need to use gas welding oxide flame to grill the screw, until the screw is burned red drop a small amount of oil. The screw will expand after heating, and the dripping oil will allow the screw to shrink when it is cold, thereby increasing the distance between the nut and the lead screw, and the oil will be able to screw off after the nut.

Suzhou Anzhikou Hardware Technology Co., Ltd. is a screw manufacturer with more than 20 years of experience in customized production, which can be customized according to customer's needs to provide you with suitable fastener solutions.