
ASTM A325 Heavy Hex Structural Bolt High Tensile Steel Structural Hex Bolt for Steel Structure Connection. Wide Material Selection: Stainless steel, carbon steel, alloy steel, aluminum, copper, and special alloys available. Multiple Surface Finishes: Options include zinc plating, HDG, black oxide, nickel, chrome, and phosphate coating. Customization Based on Drawings: Supports production from customer drawings, samples, or specific technical requirements. Comprehensive Quality Control: Full process control from raw material inspection to final dimensional and coating verification. Complete Set Supply: Can supply fasteners with nuts, washers, or complete sets for specific assembly needs. Sample Availability: Free samples available for standard items; custom samples produced upon drawing confirmation. International Certifications: Certified under ISO9001, CE, SGS, and BV standards for infrastructure applications. Flexible Delivery Options: Supports sea freight, air freight, and express delivery with various Incoterms.