Grade 6.8 Cross Hexagon Flange Bolt

The grade 6.8 cross hexagon flange bolt is a high quality flange bolt with a wide range of uses. It can be used in a variety of applications.This flange bolt is suitable for occasions that require high strength and reliability of connection, such as automobile manufacturing, heavy machinery, steel structure construction and other fields.

Features

Head type: The hexagonal heads of grade 6.8 cross hexagon flange bolts are available in flat top and concave top types.

Surface treatment: According to different needs, the surface of flange bolts has white plating, military green, color yellow, corrosion-resistant and other color categories.

Characteristics of flange: The size of flange varies according to the position of use, and there are also flat bottom and with teeth, in which the flange with teeth plays the role of anti-slip.

Connection force mode: According to the connection force mode, grade 6.8 cross hexagon flange bolts have ordinary and reamed holes. The flange bolts with reamed holes should be matched with the size of the holes and are suitable for the case of transverse force.

Advantages

Grade 6.8 cross hexagon flange bolt can be supplied in the following materials. Carbon steel flange bolts have high strength and toughness, suitable for general industrial occasions; stainless steel flange bolts have good corrosion resistance, suitable for occasions requiring high corrosion resistance.

Grade 6.8 cross hexagon flange bolt can be supplied with surface treatment. Zinc plating can improve the rust resistance of the bolt and prolong its service life; Dacromet treatment has good corrosion resistance and chrome-free environmental protection characteristics; PTFE coating not only enhances the corrosion resistance, but also improves the lubricity of the threads, which makes it easy to install and dismantle.

Installation precautions

Material matching:Ensure that the materials used for bolts and flanges are matched to avoid galvanic corrosion and fatigue problems caused by different materials.

Environmental factors: Under the harsh environment of high temperature, humidity, high salt spray, etc., the grade 6.8 cross hexagon flange bolts may be subject to erosion, so suitable materials and surface treatment should be selected and necessary protective measures should be taken.

Torque value: According to the design requirements and material characteristics of the flange, the torque value should be reasonably determined to avoid over-tightening or over-loosening. Over-tightening may lead to bolt damage or flange deformation, while over-loosening will affect the reliability of the connection.