Pan - headed self - drilling screws high quality

1. Length

The common length range is generally between 12mm and 100mm. For example, in the assembly of general wooden furniture, 12mm to 25mm self drilling screws may be used; When connecting steel structures in buildings, the length may reach 50mm-100mm.

2. Diameter

The diameter specifications are diverse, ranging from 2.9mm to 6.3mm. Fixed with thinner colored steel plates, usually using smaller diameter self drilling screws, approximately 2.9mm to 3.5mm; If connecting thicker metal components, self drilling screws with a diameter of 5mm to 6.3mm may be required.

3. Head shape

Disk head: The head is circular with a large surface area, and is used in situations that require a large force area or high aesthetic requirements, such as fixing some boards that need to cover the screw head.

• Sink head: The head is conical and can completely sink into the surface of the connected object, making the surface smooth and even. It is commonly used in places with strict appearance requirements, such as the surface of high-end wooden furniture.

Hexagonal Head: The hexagonal head design facilitates the use of tools such as wrenches to apply large torque, making it suitable for use in situations that require significant tightening force, such as connecting heavy components in mechanical manufacturing.