DIN7991 bolt,fasteners,10.9S-12.9S  black finish

We have many items of the products with different materials and size etc. to be chosen according to buyers' requirements .We can provide you good service and high quality products.OEM is welcomed if needed.

    If you need the products hereunder,we all can satisfy you.

Standards: JIS, ANSI, ASTM, DIN, BS, GB
Specification: M20-M48
Surface finish:zinc plated, HDG, black,plain
materials:40Cr,38Crmo-42Crmo etc.
Hardness grade: 8.8s,10.9s ,12.9s
Used for steel construction projects, such as the boiler steel construction of power stations, port machinery, metallurgical construction, airport hangar, large span bridge of the railway and highway, large scale industry factory building, skyscraper, exhibition hall and large-scale gymnasiums and stadiums

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