1/8" Brass Hex Coupling – FNPT x FNPT, 4,000 PSI Rated

High-Pressure Brass Coupling for Threaded Pipe Connections

1/8" Brass Hex Coupling – FNPT x FNPT provides a secure, leak-resistant connection for high-pressure systems up to 4,000 PSI. Built from durable C36000 brass, this compact hex fitting is precision-machined for reliable use in air, oil, and natural gas lines, as well as hydraulic and instrumentation setups.

🔧 Features

• — Dual 1/8" female NPT threaded ports
• — Rated for pressures up to 4,000 PSI
• — Made from corrosion-resistant C36000 brass
• — Conforms to ANSI B1.20.1, B31.1, B31.3, and ASTM B16 standards

✅ Advantages

• — Ensures tight, leak-free performance in pressurized systems
• — Prevents thread galling or seizing with clean brass threads
• — Improves reliability in compact or high-vibration environments
• — Supports consistent performance in air, oil, and gas applications

🎯 Benefits

• — Reliable choice for high-pressure instrumentation
• — Durable for long-term installations or frequent assembly
• — Efficient option for plumbing, hydraulic, or compressor systems
• — Compact hex profile fits in tight spaces and tool setups

🛠 How to Use

Apply PTFE thread sealant (not included) to the male pipe threads. Thread both ends into the coupling ports and tighten using a 5/8" wrench to ensure a leak-free seal.

📅 When to Use

Use this hex coupling in high-pressure compressed air, oil line, fuel, or gas systems where secure NPT-to-NPT female connections are needed under load.

Built for strength, precision, and performance in demanding environments.

📋 Technical Specs

• — Material: C36000 Brass
• — Connection Type: 1/8" Female NPT x 1/8" Female NPT
• — Hex Size: 5/8"
• — Overall Length: 3/4"
• — Max Operating Pressure: 4,000 PSI
• — Standards: ANSI B1.20.1, B31.1, B31.3; ASTM B16
• — Application: Air, gas, fuel, oil, and fluid systems
• — Country of Origin: USA (subject to change)