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    3/8″-18 Black Pipe Hex Head Plug – Low Carbon Steel, NPTF Threads, SAE J531

    Part #: MM-67-772

    Heavy-duty 3/8″-18 black pipe hex head plug designed for reliable sealing of threaded pipe ends. Manufactured from SAE J403 low carbon steel (1010) with a black protective finish. Features NPTF Dryseal threads (3/4″ taper per foot) to ensure leak-free connections. Compliant with SAE J531 (MAY 95) dimensional standards, providing durability and precision fit in high-performance applications.