Tectran 42-10 SAE 45-Degree Flare Union Fitting 5/8 Inch Tube

The Tectran 42-10 is a brass SAE 45-degree flare union fitting designed to connect two 5/8-inch OD flared tubes in a straight, inline configuration. Built to meet SAE J512 and J513 standards, this union provides a reliable metal-to-metal seal at the 45-degree flare seat — not through thread contact — ensuring a leak-resistant connection in demanding fluid transfer applications.

Manufactured from high-quality brass, this fitting delivers excellent corrosion resistance and long-term durability in heavy-duty truck, trailer, bus, and mobile equipment environments. It is commonly used in fuel lines, air conditioning lines, hydraulic systems, and other pressurized fluid or gas applications.

Key Features:

• Tube Size: 5/8 inch OD tube on both ends
• Flare Type: SAE 45-degree flare (SAE J512 / J513)
• Fitting Type: Union — tube-to-tube straight connection
• Material: Brass construction for corrosion resistance
• Seal Method: Metal-to-metal contact at the 45-degree flare seat
• Cross-references: Weatherhead 42X10, Parker 42F-10, Pressure Connections 42F-10-10

California Residents: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. See www.p65warnings.ca.gov for more information. Not suitable for potable water applications.