20Pcs Wire Thread Insert M12 x 1 Threaded Repair Reduce Nut Spiral Circle Extension Tool

1、Fit the socket set in the screw hole of the metal material workpiece to form a high‑accuracy standard female thread.<br> 2、When thread processing error occurs or female thread hole is damaged, the wire thread insert is a good maintenance tool.<br> 3、The thread socket is female thread fastener with certain elasticity, which can enhance the connection strength and fatigue strength of the thread.<br> 4、Stainless steel has good corrosion resistance and is not easy to break when repairing threaded holes.<br> 5、Wire thread insert can be used to convert between metric and imperial threaded holes, which is convenient and fast.<br> 20 x Wire Thread Insert<br> Item Type: Wire Thread InsertMaterial: SUS304Model: M12 x 1Thread Specification: M12 x 1Outside Diameter Before Installation: Approx.<br> 14.3-<br> 14.8mm /<br> 0.56-<br> 0.58inDrill Bit Diameter: Approx.<br> 12.3mm /<br> 0.5in1D Length After Installation: Approx. 12mm /<br> 0.5in<br> 1.5D Length After Installation: Approx. 18mm /<br> 0.7in2D Length After Installation: Approx. 24mm /<br> 0.9in<br> 2.5D Length After Installation: Approx. 30mm /<br> 1.2in3D Length After Installation: Approx. 36mm /<br> 1.4inWire Thread Insert Model For Example: M3 x<br> 0.5 x<br> 1.5D, which means that after the screw set is completed, the female thread is M3, the pitch is<br> 0.5, and the length is<br> 1.5D (length is<br> 1.5 times the diameter, that is,<br> 1.5 x 3=<br> 4.5mm ), the length here refers to the length after installation.Wire thread inserts are also called threaded sheaths, stainless steel threaded sleeves, wire sleeves, and braces. They are a new type of internal threaded fasteners made of high-strength, high-accuracy diamond-shaped cross-section steel wires; Application to low-strength engineering materials such as aluminum alloy, zinc alloy, copper, plastic, etc., can significantly improve thread strength and wear resistance.