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Self Drilling Screw A Brief Introdction
May 27, 2017

A brief introduction to the Self Drilling Screw

"Self Drilling Screw" also known as "Self Drilling Screw" "Self Drilling Screw" "drilling tail tapping screws" northerners also known as "swallowtail screws." Its implementation of the standard GB GB / T 15856.1-2002. German standard DIN7504N-1995, the standard JIS B 1124-2003.

Self Drilling Screw This self-Self Drilling Screw with a drill tip, pointed like a twist drill named, in the assembly of the screw can be drilled out of the central hole, and then by means of the adjacent part of the screw in the carrier on the hole within the self-extrusion With the thread, it is called self-Drilling screw.

Screws according to the implementation of standards can be divided into: GB GB / T, German standard DIN, the standard JIS, the international standard ISO.

Self Drilling Screw According to the use and shape can also be divided into the following categories:

1. Cross-slot pan head self-drilling tapping screws Executive Standard: GB / T 15856.1-2002 has the following specifications: (also known as round drill tail)

2. Cross-groove countersunk self-drilling tapping screws. Implementation of the standard: GB / T 15856.2-2002 has the following specifications: (also known as flat head drilling tail,

3. Cross-groove semi-countersunk self-drilling tapping screws. Implementation of the standard: GB / T 15856.3-2002 has the following specifications: This specification is semi-countersunk head in the market less use.

4. Hexagon flange surface self-drilling tapping screws. Implementation of standards: GB / T 15856.4-2002 has the following specifications: (also known as the hexagonal Dahua drilling tail, Self Drilling Screw are the most commonly used and the largest number of specifications. )

5. Hexagon flange self-drilling tapping screws. Implementation of the standard: GB / T 15856.5-2002 has the following specifications: (also known as the small hexagonal drill tail.


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