Connecting bolt

A connecting bolt comprising:

• a screw rod which has threads in outer circumference part;
• a tap part which is formed in a tip part of said screw rod so that a tip part side might become a smaller diameter in turns;
• a guidepost which is integrally formed so that said guidepost projects from a tip part of said tap part, and which is the same outer diameter size as the root diameter of a tap, or is outer diameter size smaller than the root diameter of a tap;
• a shavings insertion hole which is formed in said guidepost, said tap part, and said screw rod;
• a notch which is provided at least two or more, and which guides shavings into said shavings insertion hole formed in said guidepost and said tap part;
• and a connecting means of the shape of a bolt or a nut which is integrally formed in the back end part of said screw rod.

A connecting bolt comprising:

• a screw rod which has threads in outer circumference part;
• a guidepost which is integrally formed so that said guidepost projects from a tip part of said screw rod, and which is the same outer diameter size as the root diameter of a thread, or is outer diameter size smaller than the root diameter of a thread;
• a shavings insertion hole which is formed in said guidepost and said screw rod;
• a tap part which is formed in a thread near said guidepost;
• a notch which is provided at least two or more, and which guides shavings into said shavings insertion hole formed in said tap part and said guidepost;
• a connecting means of the shape of a bolt or a nut which is integrally formed in a back end part of said screw rod so that said connecting means of the shape of a nut links to said shavings insertion hole;
• and a screw hole which is formed in an inner wall of said guidepost, or in an inner wall of said guidepost and said shavings insertion hole.