How To Choose A Combination Screw?

Combination screws are mainly used in railway lines and highway bridges, steel frame structures of heating furnaces, workshops, high-rise residential industrial buildings, tower mast structures, lifting equipment and steel frame structures where friction-type high-strength bolt combination screws must be used.

The main feature of the screw is that the corresponding sealing ring is added, which is very convenient to use. Its biggest advantage is that it saves time, and does not need to manually allocate elastic flat pads, which can save time and effort in the use of production lines and improve efficiency.

Picking a good combination screw is the key. It depends on the compressive strength, followed by the length and pitch of the anchor bolts you want, as well as which ones you use for fixing, and then choose whether the combined anchor bolts must be flat with spring washers. If it must be tightened, it is generally recommended that the screws and spring flat washers be used at the same time.

Through the surface treatment process of the screw, the gloss is improved, and there is no sand hole connection. On the other hand, inferior screws are not smooth in processing technology, with shallow threads, many burrs, different total screw angles, shallow thread grooves, and uneven threads. If such inferior screws are used in furniture, they are very easy to slip and even break. Most of them are "Disposable Goods".