JB NS4-14 7/8" SAE Flare Nut

The JB NS4-14 7/8" SAE Flare Nut is a heavy-duty, short type forged flare nut engineered for high-pressure refrigeration and ACR applications. Unlike standard cast fittings, this brass flare nut is manufactured from premium-grade C360 and C370 brass (65% copper, 35% zinc) in the USA, providing superior tensile strength and eliminating the risk of stress cracks under extreme temperatures. Designed for a 7/8" SAE 45-degree flare connection, it ensures a leak-proof, metal-to-metal seal capable of handling pressures up to 5,000 PSI and vacuum conditions. This HVAC flare fitting is professional-grade and highly versatile, maintaining outstanding vibration resistance when paired with copper, brass, aluminum, or steel tubing. It fully complies with SAE J513, AHRI, and ASME standards, making it the industry standard for field service technicians seeking a reliable, make-and-break connection that stands up to the rigors of commercial and industrial systems.

• Forged Brass Construction: High-tensile C360/C370 brass provides maximum wall strength and prevents thermal fatigue or cracking.
• Extreme Pressure Rating: Engineered to withstand vacuum and physical pressures up to 5,000 PSI depending on tube wall thickness.
• Corrosion Resistance: High copper content ensures long-term reliability in harsh environments and exposure to various refrigerants.
• Universal Compatibility: Seamlessly integrates with copper, aluminum, and steel hydraulic or refrigeration tubing.
• Standards Compliance: Meets strict SAE J513 and AHRI guidelines for precise sealing surfaces and thread tolerances.

• Is this nut suitable for high-vibration systems? Yes, the forged short type design offers excellent vibration resistance, though long nuts are typically recommended for extreme mechanical oscillation.
• Does this fit 7/8" nominal copper pipe? This nut is sized for 7/8" Outside Diameter (OD) tubing. For nominal sizes, remember to adjust your measurements accordingly.
• Can this be used with R-410A systems? Absolutely. The high-pressure rating and forged construction are specifically designed for high-pressure refrigerants like R-410A.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.