Hex Head Neoprene Washer Self Drilling Dacromet Roofing China Screws

Hex Head Neoprene Washer Self Drilling Dacromet Roofing China Screws. Self-Drilling Design: Features a self-drilling point for easy installation on metal roofing and siding panels. EPDM Washer Sealing: Includes EPDM rubber washer to seal holes and prevent leaks near the screw head. Diverse Surface Treatments: Available in Dacromet, Hot Galvanized, Black, Color-Zinc, Blue White Zinc, and more. Wide Grade Range: Offers grades from 3.6 to 12.9 to meet various strength requirements. International Standards: Manufactured to comply with DIN, GB, ANSI, BSW, JIS, and GOST standards. Customization Capability: Provides tailored solutions for unique head shapes, thread types, lengths, and materials. Fast Delivery: Standard orders ship within 15-25 days, with expedited options for urgent needs. Comprehensive QC: Every batch undergoes 100% QC checks for dimensional accuracy, torque, and corrosion resistance.