Aluminum 4 1/2" NH Rocker Lug Cap Threads_NH (New York Fire Department/Fire Department

(New York Fire Department/Fire Department of New York)

National Pipe Tapered is common in plumbing and some industrial uses

NH threads are used by most fire departments and fire trucks

This 36" long version holds 150 feet of 1 1/2" or 1 3/4" hose

Aluminum 4 1/2" NH Rocker Lug Cap Threads_NH (New York Fire Department/Fire DepartmentAluminum adapters are fabricated from seamless extruded 6061 T6 aluminum and hard coat anodized per MIL A 8625 Type III, Class 1. Threads have a blunt start Higbee cut with indicators on adjacent lugs. Part identifications are permanent and stamped prior to hardcoat. Adapters and components meet the requirements of NFPA 1963. Gasket installed.