Carbon Steel Butt Hinges from OnlineMetals are heavy-duty, weldable hinges built for strength and longevity in high-stress applications. Made from durable 3/16"-thick steel, each hinge weighs 1.8 lbs and is perfect for heavy gates, doors, and industrial enclosures. Designed for welding directly to metal posts or frames, they can also be drilled for screw mounting when needed. The natural dark gray steel finish can be painted or coated to match your project. Available in 3"×3" to 6"×6" sizes, these hinges offer unmatched reliability and versatility for fabrication projects. Ships in 2–3 days—order today.