Comparison : Item # NH1641C100, NPTF Thread Joint for Inch-Size Tube
Item # NH1641D100, NPTF Thread Joint for Inch-Size Tube
Item # NH1641N100, NPTF Thread Joint for Inch-Size Tube
Item # NH1641S100, NPTF Thread Joint for Inch-Size Tube
Item # NH1641V100, NPTF Thread Joint for Inch-Size Tube
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