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Square bolts C level refers to the fasteners connected by the head to the screw and need to be used with nuts, and the Square bolts are grade C.
The following is a summary of the content
Classification of Square bolts
Characteristics of square bolts
How to use square bolts
Square bolts are divided into 4.8 grade bolts, 8.8 bolts, 10.9 bolts, 12.9 bolts according to the high strength grade. Its application is relatively extensive, the scope of application is electronic and electrical industry, water conservancy engineering industry, electrical products, mechanical equipment, chemical equipment, ships, vehicles, steel structures and so on.
Square bolts is divided into 4.8 grades, 10.9 grades and 12.9 grades according to the high strength grade, and is divided into iron screws and stainless steel screws according to the screw wire material.
Square bolts is characterized by a semi-circular spherical shape of the head and a square neck under the head (as shown in the figure "Half-circle Head Square Neck Bolt"). On the connected parts that are bolted with this kind of bolt, a square hole is also made accordingly. When the bolt is inserted in the connection and the nut is screwed, the bolt will not rotate due to the square neck. Its head is relatively smooth and it is not easy to hook other objects.
Square bolts connector due to structural limitations are not suitable for hex bolts or require bolts to have a smoother exposed part of the occasion. Such as agricultural machinery footwork, wall panels and so on. This bolt is divided into two types according to the size of the head: ordinary and semi-round head. The head of the semi-round head square neck bolt is straight and large in diameter, but its thickness is slightly thinner. This bolt is mostly used in trucks, barges, ironwood looms, and other wooden structural parts, etc., because the head support surface is large, it is not easy to fall into the wooden joints. Both semi-round-toed square-neck bolts are coarse bolts.
The large size of the square bolts makes it easy for the wrench to get stuck or rely on other parts to stop the rotation, and can also be used in parts with T-slots to adjust the bolt position. Class C square head bolts are often used on rough structures.
Square bolts is the same as hex bolt, but this bolt has a larger square head size and a larger force surface, which is often used in rough structures and can also be used in parts with T-shaped grooves to facilitate the adjustment of bolt position.
Ningbo Yipianhong Fastener Co., Ltd. was established in 2001, specializing in the production of various types of U-bolts, nuts and screws, with an annual production capacity of 30,000 tons and an annual turnover of 300 million yuan. Products include ANSI/ASTM, DIN, BS, ISO, GB, JS and other standards, mainly used in U-bolt seals and oil pipeline valves.
