Install expansion screw prepare tools: hand drill, hammer, cross screwdriver, pencil. After preparing the tool, select an alloy drill bit of the same diameter as the expansion screw of the expansion screw, install it on the drill and then punch the wall. The depth of the hole is preferably the same as the length of [...]
The bracket bolt has a dome or sink head, and the top of the handle has a short square section under the head of the bolt. The square part is clamped into the fixed part to prevent the bolt from turning when the nut is tightened. Bracket bolts are usually used to fix boards or [...]
The Plow Bolts are designed with a short square sinking head under the head of the bolt. The square part is used to prevent rotation when fastened through nuts. Plow Bolts are usually used in plow and other heavy equipment. The name of these bolts comes from connecting the cutting edge of the plow to [...]
As its name suggests, Carriage Bolts inserts the square neck of the head into the groove of the connector, reduces the height of the protruding surface and tightens the screw from the opposite side. It is mostly used in places where the force is not large, so the material is relatively soft. Carriage Bolts features [...]
Hexagonal bolt material At present, the hexagonal bolts in the market are mainly made of carbon steel, stainless steel and copper. Carbon steel. We distinguish low-carbon steel, medium-carbon steel, high-carbon steel and alloy steel by carbon content in carbon steel. Low carbon steel C%<0.25% is commonly referred to as A3 steel in China. Foreign countries [...]
Classification of Hex Bolts Hex Bolts are divided into outer hexagonal bolts and inner hexagonal bolts. According to the force mode of connection, there are ordinary and hinged holes. The bolts used for hinged holes should match the size of holes. They should be used when subjected to transverse force. The countersunk heads with hexagonal [...]