Torque control bolt for hose clamp

A torque control bolt for a hose clamp, which is configured to transmit a torque from a tool to a fastening bolt of a hose clamp to induce the normal fastening of the hose clamp, and then to be ruptured to prevent the transmission of torque exceeding a set value so as to prevent the damage of the hose clamp and the hose, the control bolt comprising:

• a rupture bolt with a fastening body to transmit the torque from the tool to a head of the fastening bolt;
• a coupling unit formed on the head and the rupture bolt and configured to keep the coupling force between the head and the rupture bolt, wherein the coupling unit comprises a male coupler that protrudes from the center of the inner end of the bolt body of the rupture bolt toward the fastening bolt, and a female coupler formed concavely at the center of the head of the fastening bolt to accommodate the male coupler;
• and
• a rupture section formed on the rupture bolt and configured to prevent the torque from the tool from being transmitted to the fastening bolt when the torque exceeds the set value, wherein the rupture section comprises a notch formed at a boundary position between the bolt body and the male coupler, and a rupture guide recess formed extending from the center of the outer end toward the inner end of the bolt body to reduce the thickness at a position to be ruptured.