Features 1Fit the wire screw set in the screw hole of the soft metal material workpiece to form a standard female thread. 2The wire thread insert is a good repair tool when there is a thread processing error or a damaged female thread hole is repaired. 3The wire thread insert can be used to convert between metric and inch threaded holes, which is convenient and quick. 4304 stainless steel has good corrosion resistance and is not easy to break when repairing threaded holes. 5Commonly used in hydraulic machinery, welding equipment, auto parts, power machinery and furniture, etc. Specification Item Type: Wire Thread Insert Material: SUS304 Model: M3.5 x 0.6 Thread Specification: M3.5 x 0.6 Outside Diameter Before Installation: Approx. 4.5-4.8mm / 0.18-0.19in Drill Bit Diameter: Approx. 3.7mm / 0.1in 1D Length After Installation: Approx. 3.5mm / 0.1in Number of Turns Before Installation: 4 1.5D Length After Installation: Approx. 5.3 mm / 0.2in Number of Turns Before Installation: 6.4 2D Length After Installation: Approx. 7.0mm / 0.28in Number of Turns Before Installation: 8.9 2.5D Length After Installation: Approx. 8.8mm / 0.35in Number of Turns Before Installation: 11.4 3D Length After Installation: Approx. 10.5mm / 0.4in Number of Turns Before Installation: 13.9 Wire Thread Insert Model For Example: M3 x 0.5 x 1.5D, which means that after the screw set is completed, the female thread is M3, the pitch is 0.5, and the length is 1.5D (length is 1.5 times the diameter, that is, 1.5 x 3=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. Package List 50 x Wire Thread Insert