These connection sleeves are manufactured from high-quality stainless steel with outstanding anti-rust and corrosion resistance for long-term service in various harsh working environments. Adopting through-hole, internal thread and double-end bore integrated design, they deliver accurate positioning and stable connecting performance for assembly structures. Precision processing ensures smooth thread engagement and easy installation with tight fit for different mechanical assembly needs. Complete specifications include M4, M5, M6, M8, M10 and M12 to satisfy various matching and connection requirements. Widely applied in mold assembly, precision machinery equipment, hardware connection and industrial fastening scenarios. Stable factory quality supply, ideal for global hardware purchasers and manufacturing enterprises.