good quality manufacturer carbon steel DIN912 grade 4.8/8.8/10.9 zinc/black/plain hexagon socket bolt

good quality manufacturer carbon steel DIN912 grade 4.8/8.8/10.9 zinc/black/plain hexagon socket bolt

1) Various kinds of bolts available

2) Can be made with different tensile strength, such as Class

    4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 10.9 and 12.9, inperial grade 2, 5, 8 and 10

3) Can be supplied with different finish, such as bright, zinc plated, hot-dip galvanized, mechanical plating, black

4) Can be made with different standards, such as ISO, DIN, AS/NZS, GB, ANSI, BS and special standard according to the drawing

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