S-44665K251 1.38" ID x 1 21/32" OD x 5 1/2" Long ASTM B241 Standard-Wall Aluminum Threaded Pipe Nipples and Pipe

Key Features & Benefits at a Glance

• Leak-proof performance with NPT threads on both ends for secure connections in air, oil, and water systems
• Superior durability from seamless 6061 aluminum construction that resists corrosion and mechanical stress
• Precision compatibility with Class 150 aluminum fittings and Class 125 flanges for reliable industrial integration
• Long-term reliability thanks to ASTM B241 compliance ensuring material quality and dimensional accuracy
• Environmental safety with RoHS 3 compliance, making it suitable for regulated applications
• Optimal flow characteristics with standard wall Schedule 40 dimensions (1.38" ID, 1 21/32" OD) for consistent media transfer
• Easy installation with male threaded ends and straight design for straightforward piping connections

Professional Applications & Engineering Value

This 1 1/4" NPT Schedule 40 aluminum threaded pipe nipple delivers exceptional value in demanding industrial environments where leak prevention and material integrity are critical. The seamless 6061 aluminum construction eliminates weak points that could fail under pressure cycling in air, oil, and water systems. With NPT threads on both ends, this nipple creates secure, pressure-tight connections that withstand vibration and thermal expansion common in industrial piping. The ASTM B241 compliance guarantees consistent wall thickness and dimensional stability, preventing system downtime while maintaining Class 150 fitting and Class 125 flange compatibility. Engineers specify this component for its balanced combination of lightweight aluminum properties and robust threading that outperforms plastic alternatives in high-stress applications.

Specification Summary & Compliance

This aluminum threaded pipe nipple features precise NPT threading with standard pipe tolerances, measuring 5 1/2" in length with 1.38" ID and 1 21/32" OD. Manufactured to ASTM B241 specifications for aluminum pipe, it maintains Schedule 40 standard wall thickness of 0.14". The product is fully RoHS 3 (2015/863/EU) compliant and designed for compatibility with Class 150 aluminum fittings and Class 125 aluminum flanges, ensuring regulatory adherence and industrial safety standards.