According to AODA machinery manufacturing understanding flange bolt is by the hexagon head with flange (six angle below the gasket with hexagonal fixed together) and screw with external thread of the cylinder two parts composed of a class of fasteners, to tie in with the nut, is used for fastening and connecting two with a through hole parts.

This type of connection is called bolt connection. If the nut is screwed down from the bolt, the two parts can be separated so that the bolt connection is detachable and connected.

Flange bolt classification

1, six angle flange type: six corners of the head has two kinds, one is flat brain, the other is a concave brain.

2, surface color categories: according to different needs, the surface plated white, yellow, green, the color of the other never rusty dacromet.

3, flange categories: according to the location of the flange bolt is different, the size of the requirements are different, and the flat flat and with the teeth of the points, with the teeth of the non slip effect.

4, according to the connection of the force, there are ordinary and there is a hinge hole with the hole with the flange bolts to the size of the hole with the use of the transverse force when.

In addition, in order to meet the need of locking after installation, there is a hole in the rod part, which can not be loosened when the bolt is vibrating. Some flange bolts are not threaded rod to do fine, called the thin rod flange bolt. There are special high strength bolts on the steel structure. The head will be bigger and the size will be changed.

Note: the common standard, currently on the market, GB5789 (big), GB5787 (head).