M4 X 0.7 3D 304 Stainless Steel Wire Thread Insert Sleeve 20Pcs

304 stainless steel has good corrosion resistance, rust prevention, high hardness, and excellent oxidation resistance. It is austenitic stainless steel, which is non-magnetic or slightly magnetic. It repairs worn female threads. With self-tapping sleeves, the same screw can be used continuously. Features a certain of elastic, and provides an even load on the thread. Wire thread inserts have self-tapping capability without pre-tapping the base metal. Large contact surface with finished products, strong tensile force. Strong resistance to vibration, no deformation. Softer materials can be installed, no need to consider the elastic coefficient. Greatly improve the strength and wear resistance of threaded connections, prevent thread loosening and slippage, and repair damaged internal threaded holes. Mainly used for various low-strength metal and non-metal materials, such as aluminum, magnesium, cast iron, plastic, rubber, MDF, ceramics, fiberglass, wood. When the installation amount is small, take the corresponding bolts + nuts, fix the thread insert on the screw and fix it with the same type of nut to make the three in one. Use a wrench to screw the threaded insert into the bottom hole and remove the screw. When the installation amount is large, use special installation tools to install. Drill holes with the appropriate size drill bit, then tap with the same size tap as the bolt. Put the screw sleeve on the installation tool and adjust the height of the pipe position. Gently screw the screw sleeve into the hole until the end of the screw sleeve is between 1/2 and 1/4 of the plane of the screw hole. Twist the crossed wires with the break tool instead of the installation tool.