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NEW Nilfisk Hot Pressure WashersPressure WashersMachine Parts by BrandPumps & SparesPopular High Pressure HosesHose ReelsNozzlesPressure Washer TriggersUnloader ValvesInterpump Service KitsBrass hose barbs with a male thread, for fitting low pressure water and chemical hoses to female threaded ports, valves and fittings. Over 30 combinations of thread size and hose barb size are listed, including a 1 inch brass hose barb. Check the hose bore and the thread size on each product page, and confirm threads using our BSP thread size chart.