High-Strength Post Tension Thread Bar Connect Domed Nut for Bridge Construction. Diverse Material Options: Available in Carbon Steel, Alloy Steel, Stainless Steel, and Brass. Comprehensive Surface Finishes: Options include Plain, Black Oxide, Zinc Plated, H.D.G, Nickel, Chrome, and more. Wide Grade Availability: Covers ASTM A194 grades 2, 2H, 4, 7, 7M, 8, 8M and A563 grades A, C, DH. Customization Support: Accepts OEM/ODM requests and full customization from designs for large quantities. Fast Delivery for Stock Items: Ships quickly from large inventory for regular products without delay. Free Sample Availability: Samples provided free of charge, though shipping costs are borne by the customer. Competitive Factory Pricing: Direct factory pricing eliminates middlemen with attractive volume discounts. ISO 9001 Quality Assurance: Strict quality management systems and material testing ensure consistency.