Material: Black carbon steel, made of high-quality carbon steel material.
Appearance: The surface has been treated with black, giving it a smooth black appearance.
Thread: The thread shape is an internal hexagon, which means that the bolt head has a hexagonal groove and can be rotated using a hex wrench or wrench.
Size: Available in different sizes and lengths to meet various connection requirements.
Strength level: According to application requirements, different strength levels of internal hexagonal bolts can be provided, such as grade 8.8, grade 10.9, etc.
Application: Widely used in the fields of mechanical manufacturing, automotive industry, construction engineering, etc., for connecting metal parts and providing stable connections.