Product introduction

　

Self-tapping screw Type-2

Type 2 tapping screw is called B tapping. Unlike type 1, type B0 does not have a sharp tip or a groove. Additionally, the tip is designed with a taper of about 2 to 2.5 threads to facilitate insertion into the counterpart. Compared to type 1 tapping screws, type 2 has a finer pitch and a smaller outer diameter, making it more suitable for fastening thicker plates. The materials that can be fastened include metals such as steel, stainless steel, aluminum, brass, as well as sheet metal, press steel plates, plastics, and hard rubber.

Self-tapping screw Type-2 with a groove at the tip

Type 2 tapping screw that has a groove at the tip is called B1. The groove serves as a blade, improving fastening capability and facilitating the discharge of metal shavings. As a result, it can be used for thicker fastening materials compared to type 2 without a groove. Specifically, it can be used for sheet metal and press steel plates made from materials like iron, stainless steel, aluminum, and brass, and depending on the fastening conditions, they can also be used for structural steel, castings, etc.

Self-tapping screw Type-3

Type 3 tapping screw is called C tapping. Similar to type 2 that does not have a groove at the tip is called C0. Additionally, the tip is tapered by about 2 to 2.5 threads to make it easier to insert into fasteners. Type 3 is set to have the same outer diameter and narrow pitch as small screws. It is not suitable for materials like resin or hardboard because of the narrowest pitch among tapping screws. However, like type 2, it can be used in sheet metal and press plates made of materials such as iron, stainless steel, aluminum, and brass.

Self-tapping screw Type-3 with a groove at the tip

Type 3 tapping screw with a groove at the tip is called C1. The groove serves as a blade, improving fastening ability and facilitating the discharge of metal dust. Therefore, compared to type 3 without the groove, it can be used for thicker fastenings such as iron, stainless steel, aluminum, brass, and other sheet metal or pressed steel plates, and depending on the fastening conditions, it can also be used for structural steel and castings.

Self-tapping screw Type-4

Type 4 tapping screw is called AB. Like type 1, it has a pointed tip, and the pitch is the same as type 2. This is the most recently added shape among tapping screws, combining the advantages of type 1 and type 2. As for the materials to be fastened, options include iron, stainless steel, aluminum, brass, as well as sheet metal, press steel, and materials like resin and hard rubber. However, it is not suitable for use in thick fastened materials such as structural steel and cast iron.