Brass Flare Nuts Datasheet JIC Thread size -JIC Dash SizeUNF Thread sizeOD male thread inchesFemale Thread ID Inches -25/16 X 240.31250.2614 -33/8 X 240.3750.3299 –047/16 X 200.43750.3762 –051/2 X 20 0.5000.4387 –069/16 X 180.56250.4943 –083/4 X 160.750.6733 –107/8 X 140.8750.7874 –121–1/16 X 121.06251.514 –161–5/16 X 121.31251.2103 Brass Flare Nuts are specialized fasteners used in flared fitting assemblies to secure the flared end of tubing—creating a leak-proof, pressure-resistant joint without the need for soldering. Engineered from high-quality brass (such as UNS CA-360), these nuts combine durability, corrosion resistance, and a refined appearance, making them ideal for critical HVAC, refrigeration, and gas distribution applications. As one of India’s leading manufacturers and suppliers, we produce a wide range of Brass Flare Nuts at our advanced facility in Jamnagar. Our products are trusted worldwide for their precision, reliability, and superior quality. Brass Flare Nuts Key Features Material & Finish:Made from premium brass, these flare nuts offer natural corrosion resistance and a warm, attractive finish. Their robust construction is suitable for use with liquefied petroleum gases, natural gas, and other fluids. Design & Function:Designed to mate with a 45° flared tubing end, the nut’s precision-machined hex profile allows for secure tightening with standard tools. This metal-to-metal contact between the flared tube and fitting provides a durable, leak-tight seal even under moderate to high pressures. Standards & Performance:Often conforming to SAE standards (such as SAE J513 for refrigeration fittings), brass flare nuts are typically rated for pressures up to 700 psig and can operate efficiently over a temperature range from –65°F to 250°F. Their design also offers good vibration resistance, which is critical for many industrial applications. Versatility:Available in various sizes and thread specifications, these nuts are tailored to match corresponding flared tubing diameters—from small-diameter lines to larger HVAC and refrigeration applications. Technical Specifications (Example: 5/8″ Brass Flare Nut) Parameter Specification (Approximate) Tube OD Compatibility ~5/8 inch Width Across Flats ~1‑1/16 inch Overall Length ~0.94 inch Pressure Rating Up to 700 psig Operating Temperature –65°F to 250°F Note: Actual dimensions and ratings vary by size and manufacturer specifications. Applications HVAC & Refrigeration:Essential for creating secure, leak-proof connections in air conditioning and refrigeration line sets. Gas & Liquid Distribution:Used in natural gas, LP gas, and fuel line applications where a robust, solder-free connection is desired. Industrial Fluid Power:Suitable for systems that require reliable, repeatable assembly and disassembly for maintenance without sacrificing seal integrity. By integrating Conex Metals’ Brass Flare Nuts into your assemblies, you benefit from a cost-effective, reusable solution that ensures a tight seal, reduces potential leak points, and meets rigorous industry standards for performance and safety.
