Halfen bolt serrated

Halfen bolt serrated used to fix halfen channels, wide used in the industrial field of application, like curtain wall construction, fixing the cables for railway tunnel, fixing the noise barriers, stadium seat fixing, elevator shaft, and piping system fixing.

29/20 Halfen bolt serrated

29/20 M12

Features and advantages:

The lozenge of bolt head can effectively prevent the bolt from being over-rotated
A notch mark at the end of the screw to facilitate correct installation and positioning
The multistage cold forming process
Grade 8.8 mechanical properties, excellent tensile strength, shear strength, anti-fatigue and fire resistance performance.
The surface is coated with special multi-component alloy, Hot dip galvanizing thickness of 80um
Passed 150 hours for Copper Accelerated Acetic Acid Salt Spray(Fog)Test for surface finishing (CASS Test)
Passed 12oo hours for Cyclic Corrosion Test (CCT)

38/23 Halfen bolt serrated

38/23 M12 M16

Features and advantages:

The lozenge of bolt head can effectively prevent the bolt from being over-rotated
A notch mark at the end of the screw to facilitate correct installation and positioning
The multistage cold forming process
Grade 8.8mechanical properties, excellent tensile strength, shear strength, anti-fatigue and fire resistance performance.
The surface is coated with special multi-component alloy, Hot dip galvanizing thickness of 80um

54/34 Halfen bolt serrated

53/34 M16 M20

Features and advantages:

The lozenge of bolt head can effectively prevent the bolt from being over-rotated
A notch mark at the end of the screw to facilitate correct installation and positioning
Medium frequency heating, cold forming and hot forming process
Grade 8.8mechanical properties, excellent tensile strength, shear strength, anti-fatigue and fire resistance performance.
The surface is coated with Hot dip galvanizing thickness of 55um

64/44 Halfen bolt serrated

64/44 M20 M24

Features and advantages:

The lozenge of bolt head can effectively prevent the bolt from being over-rotated
A notch mark at the end of the screw to facilitate correct installation and positioning
Medium frequency heating, cold forming and hot forming process
Grade 8.8mechanical properties, excellent tensile strength, shear strength, anti-fatigue and fire resistance performance.
The surface is coated with Hot dip galvanizing thickness of 55um