Features 1、The wire thread insert can be used to switch between metric and inch threaded holes, which is convenient and quick. 2、Fit the wire screw set in the screw hole of the metal workpiece to form a wear‑resistant and high‑accuracy standard female thread. 3、If there is a threading error or a damaged female thread hole is repaired, the wire thread insert can be used as a repair tool. 4、The thread repair socket is made of stainless steel, which has high strength and is not easily deformed during the thread repair process. 5、These repair nuts are mainly used in manufacturing fields such as aviation, automobiles, lamps, molds, and mechanical equipment. Specification Item Type: Wire Thread Insert Material: SUS304 Standard: US Units Model: 4-40 Diameter: Approx. 2.845mm / 0.11in Pitch: Approx. 0.64mm / 0.03in Outside Diameter Before Installation: Approx. 3.6-4.0mm / 0.14-0.16in Drill Bit Diameter: Approx. 3.0mm / 0.12in Thread Protective Socket Model Specification Description: For Example: M3 x 0.5 x 1.5D 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 refers to 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 sockets, wire sockets, and braces. They are a new type of female 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