product brand
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Expansion chemical
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Service
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OEM/ODM and fast shipping ,strict quality check,free sample for standard fastener
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customize lead time
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30-60days
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standard
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DIN, ASTM/ANSI JIS EN ISO, AS, GB
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Steel Grade
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DIN: Gr.4.6, 4.8, 5.6, 5.8, 8.8, 10.9, 12.9; SAE: Gr.2, 5, 8;
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Production Process
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M2-M30:Cold Froging, M30-M100 Hot Forging, Machining and CNC for Customized fastener
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finishing
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Zinc(Yellow, White, Blue)black oxide, Black Hop Dip Galvanized(HDG), Black Oxide,
Geomet, Dacroment, anodization, Nickel plated, Zinc-Nickel plated |