Aluminum 4" NH Rocker Lug Cap Origin_Made in the USA Note - 3 inch NH

Note - 3 inch NH / NST is very rare and is often confused with 2

Carbon Steel 6" Flange x 4 1/2" Male NH

Wrench is stamped 2

Carbon Steel 6" Raised Faced ANSI 150 Flange x 5" Storz

Compatible part number - DMH4040F

Aluminum 4" NH Rocker Lug Cap Origin_Made in the USA Note - 3 inch NHAluminum 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.