D Head Bolt Wheel Fastener High Strength Trilex Wheel Bolt

D head bolt is the bolt with a D-shaped head. The bolt used on the wheel. It’s made of SCM435 with heat treating to reaches grade 10.9/12.9 and then plating. The total length without the head can be 60/65/70/75/80/95/110/125/130/140mm. Ever Hardware provides custom-made fasteners and customizable packaging.

Dacromet is the leading inorganic coating specified by automotive companies worldwide and is a proven coating system in many industries. A water-based, VOC compliant coating, dacromet is comprised mainly of overlapping zinc and aluminum flake in an inorganic binder.
Four-Way Corrosion Protection
Barrier Protection: Overlapping zinc and aluminum flakes provide an excellent barrier between the steel substrate and the corrosive media
Galvanic Action: Zinc corrodes to protect steel
Passivation: Metal oxides slow down the corrosion reaction of zinc and steel to provide 3 times greater corrosion protection than pure zinc
Self-Repairing: Zinc oxides and carbonates migrate to the damaged area of the coating to actively repair the coating and restore barrier protection

Heat treating makes the D head bolt high tensile to be Grade 10.9/12.9. Heat treating is a group of industrial and metalworking processes used to alter the physical, and sometimes chemical, properties of a material. The most common application is metallurgical. Heat treatments are also used in the manufacture of many other materials, such as glass.