Description

This 3/8″ High-Pressure Steel Hex Coupler (also known as a pipe coupling or socket) is engineered to join two 3/8″ male pipe threaded lines, hoses, or fittings together in a straight line. Rated for a heavy-duty 4,000 PSI, this forged carbon steel fitting features an external hex body layout that provides an incredibly strong, leak-proof connection for demanding fluid systems.

Key Specifications

• Connection Type A: 3/8″ FPT (Female Pipe Thread)

• Connection Type B: 3/8″ FPT (Female Pipe Thread)

• Material: High-Strength Forged Carbon Steel

• Pressure Rating: 4,000 PSI (Maximum Working Pressure)

• Design: Straight Hex Body Equal Coupling

• Bulk Quantity: 300 Pieces

Product Highlights

• Straight-Line Female Coupling: Designed to cleanly bridge two 3/8″ MPT connection points without changing flow direction or reducing pipe volume.

• Wrench-Friendly Hex Body: Precision-machined with a solid external hex profile rather than a standard smooth, round body. This allows open-end wrenches, adjustable wrenches, or sockets to grip the coupler tightly for maximum leverage during high-torque assembly.

• Extreme 4,000 PSI Capability: Forged from premium carbon steel to safely handle continuous heavy-duty operational pressures, hydraulic pressure spikes, and intense fluid water-hammer shocks without weeping or cracking.

• Vibration & Fatigue Resistant: High tensile strength ensures the internal threads resist stripping, shearing, or backing out under the constant, heavy vibrations of commercial engines and high-displacement pumps.

• Corrosion Protection: Finished with a durable zinc plating that shields the raw carbon steel from rust, moisture, and chemical exposure in rugged commercial wash and industrial environments.