Thread specification: According to the standard, the thread specification range is usually M2 ~ M20, but the actual application may be adjusted according to specific needs.
GB/T 6191-1986 6-Lobe cap screws class 8.8 are widely used in the field of machinery industry as fasteners. They are suitable for applications requiring high strength and good corrosion resistance, such as automobile manufacturing, mechanical equipment assembly, electronic equipment fixing and other fields.
The surface treatment of the screw can be selected according to the specific needs, and the common treatment methods include blackening, galvanizing, washing and so on. These treatments can not only improve the corrosion resistance of screws, but also improve their appearance and assembly performance.