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The Coupling Malleable Iron 3/8 in FNPT from Govets Direct is an essential component for plumbing and industrial systems that require high-pressure connections. Made with thicker walls to resist cracking under pressure, this Grainger-approved coupling is suitable for air, water, oil, natural gas, and steam applications. Ideal for Class 300 fittings, it offers reliable connection for pipes measuring 3/8 inch in diameter and uses FNPT threading for easy installation. With its sturdy malleable iron construction, this coupling is the perfect solution for any plumbing or industrial project where durability and reliability are key concerns.