Semi-threaded hexagonal bolts refer to the side of the head of the bolt with a trimmed hexagon. The screw part is threaded, but there is a part of unthreaded polished rod between the head and the top of the thread. This kind of bolt is called a hexagonal bolt ( Half-threaded) or half-threaded hexagonal bolts.

Regarding ordinary bolts, there are three types: A, B, and C. Two types of A and B are refined bolts, which are rarely used. Generally speaking, ordinary bolts refer to ordinary bolts of grade C. Generally, they are used in temporary connections and connections that need to be disassembled. Commonly used C-level ordinary bolts. The application of bolts is very wide. According to the type and purpose, it can be divided into many kinds. Qingdao Haorui Steel Products can also provide Li-point screws, countersunk head bolts, carriage bolts, square head bolts, round head bolts, flange bolts, and flexible bolts. Joint bolts, U-shaped bolts, T-shaped bolts, stud bolts, turnbuckle bolts, etc.

Qingdao Haorui Steel Products Co., Ltd. (formerly Qingdao Chengyang Dahua Standard Parts Factory, started in 1994), has more than 20 years of experience in the production and processing of Qingdao standard parts and non-standard parts, advanced production technology, strong technical force, and Many large domestic companies have cooperative relations, and their products are exported to the United States, Europe, and Southeast Asian countries and regions.