THE METHOD OF MAKING BLOT, NUT ASSEMBLE NOT ONLY CLAMP BOLT HEAD, BUT ALSO CLAMP END OF SCREW SIDE OF THE BOLT

摘要

PURPOSE: A bolt for assembling to a nut with clamping the bolt head and without clamping the bolt head is provided to enhance the working convenience and to enable the assembling operation to be rapidly performed since the connecting operation of a bolt to a nut is performed simultaneously. CONSTITUTION: A bolt for assembling to a nut with clamping the bolt head and without clamping the bolt head comprises an uneven part. The uneven part has a polygonal shape at the end of a bolt. The polygonal shape comprises hexagon and square. The uneven part has groove or protrusion shape.