Reasons for Choosing Triangular Self-tapping Screw for Metal Parts

Triangular tapping screw has a unique approximate triangular profile, which provides an embedded self-tapping and self-locking device. Without any cushion, the locking effect can be improved when vibration occurs, thus the connection is more reliable, the expensive tapping device and operation can be saved, and the direct cost can be reduced.

Triangular contour is easy to form threads

1. Ensure the integrity of the connection; 2. Overcome the increase of friction; 3. Reduce the driving moment.

Complete threaded projection surface

1. Improve product consistency; 2. Improve connection effect.

Reducing Connection Cost

The key to reducing connection costs is to remove inefficient processes and unnecessary components. When the triangular tapping screw is locked into the object, the appropriate thread is formed automatically, and the expensive automatic tapping equipment and tapping process are no longer needed.

Eliminate expensive and time-consuming underhole tapping processes and facilities

Improving assembly operations

When installing common self-tapping screw, we often need high moment value to overcome friction. The unique cross-section shape of triangular self-tapping screw is used to reduce friction. A relatively small moment is enough to make the screw in place. With the rotation of the triangular screw, the thread of the mother body with strength and hardness is also formed.

Alleviating Thread Wear and Chip Problem

Reducing interference between threads

Provides uninterrupted plastic flow to improve connection integrity

Substitution

Standard thread series can also be replaced by machine tooth screw.

Designed to allow the removal and replacement of fasteners

Prevent loosening of connection in vibration state

The mechanical and self-locking characteristics of triangular tapping screw greatly improve the loosening ability under vibration. A unique triangular outline allows the material to flow into the buffer zone between the threads during installation, thus providing a reliable fit and a high exit moment.

Thread exit torque meets IFI 124 and 524 standards.

The possibility of loosening under vibration state can be reduced without additional locking settings such as wax and adhesives.

Increase the use of (fasteners)

Self-tapping triangular threads can be used in various drilling, punching and core holes of castings, thin iron sheets and hard plastics.

Progress in Connection Technology

Limitation of machine tooth screw

It weakens the discontinuous flow of threads.

Shear stress problem

Thread tolerance causes loosening

Limitations of Tail-cutting screw

Fracture cutting weakens threads

Need longer guidance

Difficulties in assembly and reuse

Large bottom hole depth and waste cutting space are needed

Scrap dirty the scene

Advantages of triangular tapping screw

Maximum possible shear range

Matrix hardened by workpiece, providing uninterrupted material flow

Better anti-loosening performance

Stronger threaded connection than machine tooth screw of the same size

COMRAY Series

When using high strength steel or structural parts, we recommend "COMRAY" series of screw, which is made of high strength alloy steel. Firstly, it is heat treated to hardness HRC 33-39 and tempered. Then, the screw guide part is treated to minimum hardness HRC 45 by induction quenching (high frequency quenching). Non-electroplating or surface treatment is better.

Stainless steel series TAPTITE triangular tapping screw, to meet your needs in different occasions.

For more information about TAPTITE II, TAPTITE 2000 and other triangular teeth tapping screw, please contact Engineering Department of Kenley Industrial Company.