⏱ 10 min read · Updated for 2026 ⚡ Quick Answer US Brass Fitting Thread Standards are the critical specifications that determine whether two hose fittings, connectors, or adapters will safely join. Five distinct thread systems dominate the American market: NPT (National Pipe Thread, tapered), NPSM/NPSH (straight pipe threads sealed by gasket), GHT/NH (garden hose… Continue reading Brass Hose & Sanitary Fitting Sizes: The Complete US Thread and Size Chart Guide