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The eyebolt is forged by warm quenching. Surface treatment of eyebolt: corrod-dt, which is at least 20 times more effective than ordinary zinc plating. Length of external thread ¨ H ¨， The bolts are fixed with other parts, and the bolts of the same quality grade must be selected for replacement.

Square mother, hardware equipment, fastening accessories. It is square in shape with internal thread and can be used with bolt. It is also called square nut.