The tail of the drill tail screw is in the shape of a drill tail or pointed tail, and there is no need for auxiliary processing. It can be directly drilled, tapped, and locked on the setting materials and basic materials, greatly saving construction time.Compared with ordinary screws, its toughness and maintenance force are high, and it will not loose for a long time after combination. It is simple to complete the operation at once using safe punching and tapping.

Use: It is a kind of screw, which is mainly used for fixing colored steel tiles of steel structures and can also be used for fixing thin plates of simple buildings.It cannot be used for metal-to-metal binding and fixing.

The models are: Φ4.2/Φ4.8/Φ5.5/Φ6.3mm, the specific length can be agreed upon according to requirements.

According to the material, it can be divided into: steel 1022A, stainless iron 410, stainless steel 304.

1. Carbon steel drill tail screw, 1022A, standard heat-treated steel can be used as a material for the production of drill tail screws. After heat treatment, the surface hardness is HV560-750, and the heart hardness is HV240-450. Ordinary surface treatment is easy to rust, high hardness and low cost.

2. Stainless iron drill tail screw, 410, can be heat treated, and its anti-rust ability is better than that of carbon steel and worse than that of stainless steel.

3. Stainless steel drill tail screw, 304, cannot be heat treated, has strong anti-rust ability, low hardness and high cost, and can only drill aluminum, wood, and rubber sheets.

4. Composite drill tail screws. The drill bits are produced from carbon steel, and the threads and heads are produced by a combination of 304 stainless steel.