Hex Head Self-drilling ScrewsDelivery term:The date of payment from buyers deliver within days
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1. No need for auxiliary processing, drilling and tapping directly on the base material, which greatly saves construction time.
2. excellent performance: high tough pull and maintain power, not easy to loose.
3. Surface treatment: ordinary, True color
4. HS code: 7318151001、7318159090
5. specifications and gauges: M3-M12