M 8 Heavy Duty High Strength Expansion Bolt

M 8 Heavy Duty High Strength Expansion Bolt. Earthquake Resistance: Designed for anchoring important steel components to concrete for superior earthquake resistance. Cracked Concrete Compatible: Impact resistant and suitable for installation in cracked concrete environments. Self-Cutting Technology: Features continuous cutting and reaming for high-quality hole enlargement and full locking key plate opening. Customizable Dimensions: Supports customization of screw length and thread specifications to meet specific project needs. Diverse Surface Treatments: Available with Electro-Galvanizing, Hot-DIP Galvanizing, Dacrom, and Black Oxide finishes. Multiple Standards Compliance: Complies with GB, DIN, ANSI, BSW, and GOST standards with full testing reports available. High-Strength Materials: Constructed from Alloy Steel with grades 8.8, 10.9, and 12.9 for heavy load-bearing capacity. OEM/ODM Support: Full customization services including special specifications and custom drug tube designs.