We know that the combination screw is a kind of hardware screw product, and there are many kinds of screw products on the market. Combination screws are indispensable in life and have excellent performance. Assembly screw installation is not very clear knowledge for most people, so we can understand and apply this nut product in depth. Combination screws are two components with only one elastic pad or only one flat pad or only one spline. The national standard number of the combination screw is represented by GB9074. The national standard number of the commonly used cross recessed small pan head triple combination screw is GB9074.8. This. 8 refers to the small plate, also known as the head size of the pan head screw. Professional combination screw manufacturers, the habitual expression is triple PM, the national standard number of commonly used cross recessed big head combination screws is GB9074.4, and professional combination screws are called big heads. That is to say, the head of the combined screw is larger and thicker than the head of the small pan-head combined screw. There is also a commonly used external hexagonal combination screw, which is a cross-external hexagonal combination screw. The national standard is generally GB9074.13. How to install the combination screw?


Assembly screw installation process:
1. When disassembling, the hardware accessories must be disassembled correctly, not forcibly disassembled, and mixed-use to ensure the safety of the items. The disassembled furniture parts should be stacked in sets and packed in time. The front of the panel should be emphasized, and the parts with glass materials should be marked and stacked.
2. For large-scale furniture with complex assembly, the parts should be numbered according to the situation when disassembling and assembling, and the installation drawing should be drawn by hand to ensure fast and accurate assembly.
3. Precautions in the process of assembling and disassembling the combination screws: If the furniture parts of the panel miscellaneous pieces need to stand on the ground before packaging, blankets should be placed on the ground and corners to avoid hurting the sides of the parts. For unpackaged panels, avoid placing sharp and hard parts on the top during disassembly to avoid scratching the surface. During the packaging process, check whether the packaged parts have small hard materials such as screws and nails; do not drag the panel and desktop directly to the floor.
4. In addition, do not collide with fragile parts during transportation. It can be said that if any part is broken, it is almost impossible to find other substitutes, and maybe even a small part may cause damage to the entire furniture.


Combination screw installation is a kind of screw that friends in the decoration field pay great attention to, and it is also used in many scenes in life. Introduce the performance of the screw product, the related performance of the assembly screw, and its service life, which can ensure the correctness and usability of the installation. We need to understand some general knowledge of hardware so that we cannot be ignorant of the performance of the combination screw when we use it in the future, otherwise, it will be deformed when the combination screw is installed, which will reduce the life of the combination screws.