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DIN 933 DIN931 Hex Bolt 4.8 8.8 Grade Hexagon Bolt. Diverse Material Options: Available in SS304, SS316, A2-70, A4-80, B8, and B8m grades. Wide Size Range: Sizes from M1.6 to M52 and lengths from 6mm to 350mm. Customized Services: Tailored fasteners based on customer samples and drawings. Free Sample Availability: Free samples provided if in stock, excluding air freight cost. Multiple Standards: Complies with DIN, ANSI, and GB standards. Fast Delivery: Sample orders in 5-7 days; container orders in 15-20 days. 20 Years Experience: Professional manufacturer with extensive industry expertise. Factory Direct Supply: Competitive pricing with direct manufacturing and export.