Holyoke Fittings 41fpsw-86 1/2 X 3/8 Swivel Red Flare Nut Fitting

Product Description

The Holyoke Fittings 41fpsw-86 is a 1/2 x 3/8 swivel red flare nut designed for use in refrigeration, HVAC, and plumbing systems where secure, leak-free flare connections are required. This fitting is color-coded red, which is a standard industry convention used to identify specific line types or sizes at a glance, helping technicians work faster and reduce the risk of misconnection in the field. The swivel design allows the nut to rotate freely during installation, making it easier to tighten connections without twisting or stressing the tubing. This is especially useful in tight or hard-to-reach spaces where working with rigid fittings can be difficult. The 41fpsw-86 is forged, meaning it is manufactured through a process that shapes metal under high pressure. Forging produces a denser, stronger part compared to cast fittings. This results in better resistance to pressure and vibration, which matters in refrigerant lines and other fluid systems that cycle through pressure changes regularly. Flare fittings like this one are widely used in HVAC and refrigeration work because they create a metal-to-metal seal that does not rely on thread sealants or o-rings. When properly flared and torqued, they provide a reliable, long-lasting connection suitable for high-pressure refrigerant systems. HVAC technicians, refrigeration mechanics, and plumbers who work on copper tubing systems will find this fitting practical for both new installs and service work. The 1/2 to 3/8 size transition makes it useful when connecting components or lines of different diameters. It carries a Proposition 65 warning as required in California. The UNSPSC code for this product is 31161713, classifying it within standard industrial fittings categories.

• Swivel design allows free rotation during tightening, reducing stress on tubing and simplifying installation in confined spaces
• Forged construction provides superior strength and pressure resistance compared to cast fittings
• Red color coding aids in quick identification of line type or size on the job site

Product Highlights

The Holyoke Fittings 41fpsw-86 swivel red flare nut offers a forged, color-coded flare connection in a 1/2 x 3/8 reducing configuration, built for reliable performance in HVAC, refrigeration, and plumbing applications.

Product Information

Standard Information

• Brand: HOLYOKE FITTINGS
• Manufacturer Part Number: 41fpsw-86

Technical Specifications

• Size: 1/2 x 3/8 inches
• Type: Swivel Red Flare Nut
• Process: Forged
• UNSPSC Code: 31161713
• Prop 65 Warning: Yes