- What is a Key Locking insert
Key locking threaded insert, literally translated as key locking threaded insert. A Key Locking insert is a special fastener with threads both inside and outside, and 2 or 4 pin keys on the external thread. The Key Locking insert is inserted into the bottom hole after tapping, and then 2 or 4 pins are pressed in to provide a strong fastening effect. The product is mainly used in aerospace, railway locomotives, vibration machinery, and electronic and electrical products that require high thread strength
- Features of the Key Locking insert
a、 The Key Locking insert is usually made of high-strength thread sheath made of stainless steel material and passivated according to relevant standards. Standard products include metric thread size, imperial thread size, and special thread size, which can be customized according to actual needs.
b、 The Key Locking insert can be used in low-strength materials such as alloys, lightweight materials, steel, and cast iron to increase thread strength; It can also be used to repair threads, and even after repairing damaged threads, bolts of the same specifications can still be used.
c、 The Key Locking insert can control the rotation and rotation of the product due to its effective mechanical key pin. There are 2 or 4 mechanical key pins, which are embedded in the key pin groove of the external thread before assembly.
d、 The Key Locking insert is particularly suitable for applications in environments that require high-strength internal threads, with strong seismic and tensile resistance. Higher strength than ordinary steel wire thread inserts, firmly connected to the substrate, and will not detach from the substrate even when working in an impact or vibration environment.
- Classification of Key Locking insert
- The bolt locking function of the Key Locking insertcan be divided into two types: ordinary type and locking type.
- The Key Locking insertcan be divided into two types based on the internal thread form: metric and imperial.
- The Key Locking insertcan be divided into thin-walled, heavy-duty, and extra heavy types based on the size of the external thread, as well as British micro and solid types, as well as various forms such as British internal thread, metric external thread, metric internal thread, and British external thread.
- Installation of Key Locking insert
4.1 Drilling
Drill the bottom hole using the specified standard drill bit, with a conical spot drill of 80 °~100 °. The diameter of the drill bit should be slightly larger than the standard thread diameter, and the drilling depth should be slightly greater than the length of the plug screw insert.
4.2 Tapping threads
Use a standard tap to machine threads, and the tap specifications correspond to the external thread specifications of the plug screw insert.
4.3 Installation
Use your hands or installation tools to screw in the Key Locking insert, slightly lower than the surface of the workpiece (0.25mm~0.75mm), and the fixed key pin plays a role in controlling the depth.
4.4 Lock keys
By installing the tool, use your hands or apply a force to press the locking key into the wall groove.