insert fileté, M4-M6 / M6-M8 / M8-M10 kit de réparation de filets, inserts pour écrous hexagonaux, douilles à visser, inserts pour écrous à douille hexagonale en acier au carbone galvanisé

The self-tapping threaded insert is made of stainless steel. The surface of the nut is smooth and burr free. High hardness and precision, not easy to break or slip. Waterproof and rustproof, long service life Thread repair is widely used in industry, automotive and marine accessories, DIY, electrical appliances, threaded fittings to protect metal threaded holes Package contains M4-M6, M6-M8, M8-M10 threaded sockets, and a transparent plastic box Wooden furniture crimp nuts are standardized as deep, clean and clear threads with uniform forces. The shape is similar to that of a coil spring, which increases the strength of the screw assembly when screwed, reduces uneven stress on the thread teeth, and resists shock and vibration The stainless steel threaded insert is inserted into the hole of the bolt or nut to create a standard internal thread into which the bolt is screwed. Increases thread fatigue resistance, reduces thread wear, increases corrosion resistance and extends service life