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See more product details The Female Coupling Will Only Connect To A Male 2 1/2" NH / NST Compatible Nozzle - 2 1/2 inch NH / NST only Hose Type - Polyester Double Jacket Color - White Approximate Width Laying Flat - 4 1/4 inches Service Pressure - 150 psiWhat is the Difference Between Single Jacket and Double Jacket Fire Hose?A single jacket hose has one cover protecting the inner rubber liner and a double jacket hose has two covers to protect the liner for increased durability and sometimes water pressure rating.Applications Construction Heavy-Duty Industrial Use2 1/2" Hose Male Couplings Inside diameter of a male coupling - 2 1/2" inches Outside diameter of a male NH / NST coupling - 3.06 inches (7.5 Threads per inch)Connections The female side of a NH / NST coupling will only connect to a male NH / NST connection The male side of a NH / NST coupling will only connect to a female NH / NST connectionThe most common thread type in use by fire departments today is NST or National Standard Thread. NST also goes by the initials NH or National Hose.FireHoseDirect is located in North Carolina. We're a firefighter owned and operated company since 2011. To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.





