Product Information Material: Hardcoat Aluminum Select a Product Part NumberSizeMale Thread PLUG400F-C4"NST (NH) PLUG250S-C2-1/2"NPSH PLUG150S-C1-1/2"NPSH PLUG600F-C6"NST (NH) PLUG300S-C3"NPSH PLUG450F-C4-1/2"NST (NH) PLUG150F-C1-1/2"NST (NH) PLUG300F-C3"NST (NH) PLUG250F-C2-1/2"NST (NH) PLUG500F-C5"NST (NH)