with 40Cr material. It divides into two catalogues:cold galvanizing and hot galvanizing,which are environmental-friendly.

Mechanical performance level 8.8

With 40Cr material. It divides into two catalogues:cold galvanizing and hot galvanizing,which are environmental-friendly.  The hardness of the former is above 5um, and the latter can be over 53um.

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screw HIT-V-F M8x110 Grd8.8 (3N2W)