Cylinder Head Bolts

Cylinder head bolts is a type of flange hexagonal bolt, which is the core load-bearing component of the engine. It is mainly used to tightly connect the cylinder head and cylinder block, ensuring reliable sealing of the combustion chamber under high temperature, high pressure, and high-frequency impact conditions, preventing air leakage, water leakage, and oil leakage, directly affecting the engine's power performance, safety, and service life.
The bolt is subjected to long-term combustion explosion pressure, thermal alternating stress, and mechanical vibration, with extremely high requirements for strength, accuracy, and fatigue resistance. Especially in diesel engines, heavy-duty engines, and power plants of construction machinery, high-strength grade materials and precision threaded structures are required to ensure long-term operation without looseness or fracture.
The 1-14UNS flange hexagonal cylinder head bolts produced by us are made of American grade 10 high-strength materials, with high thread accuracy and good locking performance. The surface is treated with blackening to enhance wear and corrosion resistance, and the length is 154mm, suitable for special models. The product can be widely used in automotive engines, engineering machinery, generator sets, marine power and other equipment, meeting stable use under high pressure, high temperature, and high load conditions, providing reliable fastening support for engine assembly.