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Heavy duty 4 1/2 inch replacement iron fire hydrant cap with NH / NST threads including chain. Pentagonal in shape.The most common size and threads for US fire hydrants is 4 1/2 inch NH / NST. Outside diameter of a 4 1/2 inch male NH / NST adapter - 5 3/4 inches (5.76) - 4 threads per inch. Inside diameter of the waterway is about 4 1/2 inches.
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🇺🇸 Ship from USA · On Agora since 2026
$108.69