Brass 1 1/2" Female NPT to 1 1/2" Male NH / NST (Hex) Outlet Threads_NPT thread and couplings in use

thread and couplings in use by fire departments today is double jacket hose with aluminum NH / NST

Notched to fit 1 1/4 inch square hydrant nut for pentagon hydrant nuts up to 1 1/2 inch from point to flat plated iron head

1 1/2" swivel rocker lug female NH / NST by 1 1/2" male NH / NST threaded line pressure gauge

Aluminum 1 1/2 inch National Hose (NH/NST) Quarter Turn Forestry Coupling

For common combustible fires in businesses such as retail stores

Brass 1 1/2" Female NPT to 1 1/2" Male NH / NST (Hex) Outlet Threads_NPT thread and couplings in useFemale to male adapters are used to bridge male to female hoses, pipes or valve fittings. Brass is commonly chosen for corrosion resistance, and is popular with chemical or salt water applications. Equivalent part number FM1515F WARNING: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. Do not use in connection with drinking water. Wash hands after handling. Brass Female to Male Adapter