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    3/8″ Black Steel Close Nipple – Schedule 40, Welded, Grade B

    Part #: MM-57-040

    This 3/8″ black steel close nipple is manufactured from welded Schedule 40 steel to Grade B standards, ensuring durability and reliable performance. Featuring NPT male threads on both ends, it provides a secure, leak-resistant connection between pipe fittings. The black finish offers enhanced corrosion resistance, making it ideal for non-potable water, air, steam, and low-pressure gas applications in industrial, agricultural, and mechanical piping systems.