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Carbon Steel Self Drilling Screw DIN7504n Zinc Plated. Wide Size Range: Available sizes from 2.2mm to 6.3mm diameter and up to 127mm length. Multiple Finishes: Options include Zinc plated, Nickel plated, Black, H.D.G., and Decromet. Custom Manufacturing: Non-standard products available according to customer drawings or samples. High Strength Grade: Grade 8.8 carbon steel construction for durable performance. Fast Delivery: Small quantities available in short time with full sizes mold in hand. Standard Compliance: Meets DIN, ANSI, BSW, BS, JIS, and GB standards.