Product Information Material: Cast Brass Select a Product Part NumberFemale ThreadFemale Thread Size FFH15T15SNPT, NPSH1-1/2", 1-1/2" FFH25F25FNST (NH), NST (NH)2-1/2", 2-1/2" FFH15NYFD15NYFDNYFD, NYFD1-1/2", 1-1/2" FFH2525NYFDNPT, NYFD2-1/2", 2-1/2" FFH15F15FNST (NH), NST (NH)1-1/2", 1-1/2" FFH1515FNPT, NST (NH)1-1/2", 1-1/2" FFH1515NYFDNPT, NYFD1-1/2", 1-1/2" FFH2525FNPT, NST (NH)2-1/2", 2-1/2"