Select a Product Part NumberMaterialThreadThread Size B13APlated SteelBSP1" (25mm) B18APlated IronBSP1-1/4" (32mm) B23APlated IronBSP1-1/2" (40mm) B28APlated IronBSP2" (50mm) B33APlated IronBSP2-1/2" (65mm) B38APlated IronBSP3" (75mm) B3APlated SteelBSP1/2" (15mm) B8APlated SteelBSP3/4" (20mm) B13Plated SteelNPT1" (25mm) B23Plated IronNPT1-1/2" (40mm) B3Plated SteelNPT1/2" (15mm) B33Plated IronNPT2-1/2" (65mm) B38Plated IronNPT3" (75mm) B8Plated SteelNPT3/4" (20mm) CCPlated SteelNPT3/8" (9.5mm) RB23316 Stainless SteelNPT1-1/2" (40mm) RB28316 Stainless SteelNPT2" (50mm) RB13316 Stainless SteelNPT1" (25mm) RB8316 Stainless SteelNPT3/4" (20mm) RB18316 Stainless SteelNPT1-1/4" (32mm) B28Plated IronNPT2" (50mm) B18Plated IronNPT1-1/4" (32mm)