Brake Head Bolts are used to secure the cylinder head to the engine block, which ensures that the combustion chamber is properly sealed. They are typically tightened to a specific torque value, which ensures that they are properly tensioned and can withstand the high pressures and temperatures generated by the engine. Head bolts are designed to withstand high stress and loads. They are made of high-strength materials such as alloy steel or titanium, which can withstand the high temperatures and pressures generated by the engine.