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ANSI Standard Hose Coupling Threads for NPSH, NH and NHR Nipples and Coupling Swivels
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NH / NST = American Standard Hose Coupling Threads of Full Form NHR / GHT = American Standard Hose Coupling Threads for Garden Hose Applications NPSH / IPT = Dryseal American Standard for Hose Coupling Joints with Straight Internal and External Loose Fitting Threads
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Commonly Used U.S. Fire Hose Connection Threads
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GHT (1/2" or 5/8" or 3/4") -- 1.0625 ODM, 11-1/2 TPIODM = Outside Diameter of Male TPI = Threads Per Inch Abbreviations for tapered iron pipe thread is NPT (National Pipe Tapered) or TIPT (Tapered Iron Pipe Thread) - mechanical seal. Abbreviations for straight iron pipe thread is NPSH (National Pipe Straight Hose), IPT or SIPT (Straight Iron Pipe Thread) - gasket seal. Abbreviations for straight fire hose thread is NH (National Hose) or NST (National Standard Thread) - gasket seal. |
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