The ZNG Galvanized Steel Nipples conform to ASTM A53/A53M standards for ERW type, Grade B material. With dimensions specified by ASTM A733 and threads meeting ASME B1.20.1 standards, these nipples are approved for use in potable water systems with NSF61 and NSF372 certifications (Galvanized Only). Stocked in sizes ranging from 1/8” x Close to 1-1/4” X 1-1/2” diameters, ensuring availability for a wide range of applications.