الوصف

The screw is a tool to tighten the machine parts step by step by using the physical and mathematical principles of the oblique circular rotation and friction of the object. The drill tail screw is a screw with a self-tapping drill head at the front of the screw. Screw is a common invention in people's production and life for thousands of years. According to the application field, it is the first invention of human beings. Drilling tail screw is a new invention in recent years, also known as self-drilling screw. Screw is a general term for fasteners, which is spoken daily.
The tail of the drill tail screw is in the shape of a drill tail or a pointed tail. Without auxiliary processing, it can drill, tap and lock directly on the setting materials and basic materials, thus greatly saving construction time. Compared with ordinary screw, it has high tenacity, pull-out force and maintenance force, and it will not loosen for a long time after combination. It is easy to operate once by using safe drilling and tapping.

Usage: It is a kind of screw, mainly used for fixing color steel tile of steel structure, and also for fixing thin plate of simple building. It can not be used for metal-metal bonding and fixing.

Material and Model

There are two kinds of materials, iron and stainless steel, among which stainless steel is divided into a variety of materials.

The models are: single weight: 3.*2K  diameter: *0mm    lenght:*9mm  price:$***0 per ton.
                           single weight: 4.*2K  diameter: *0mm    lenght:*5mm  price:$***0 per ton.
                           single weight: 5.5K  diameter: *5mm    lenght:*2mm  price:$***5 per ton.
                           single weight: 8.*9K  diameter: *2mm    lenght:*5mm  price:$***5 per ton.
The specific length can be agreed upon according to the requirements.

According to the difference of drill tail, it can be divided into:

Round head rice/cross/plum blossom, sunk head (flat head)/rice/cross/plum blossom, hexagonal Huasi, round head Huasi (big flat head), trumpet head, etc.