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Bronze thru-hull hose barb fitting with nut, 1/2 inch connection

Groco Marine Products

Groco HTH-500 Bronze Thru-Hull Fitting 1/2-in Hose

SKU CH-WQYM-KKNEP

Bronze thru-hull fitting accepts 1/2-inch hose and carries UL 647B listing

  • Bronze construction resists corrosion in saltwater
  • NPS threads create a secure hose connection
  • UL 647B listing confirms marine safety compliance
  • C83600 alloy provides strength for thru-hull durability

Bronze Thru-Hull Fitting for Marine Use

The Groco HTH-500 is a bronze thru-hull fitting designed for marine plumbing installations. It features a 1/2-inch hose barb connection with NPS threading and includes a securing nut. The body is cast from C83600 bronze alloy and carries UL 647B listing for safety compliance. This component provides a reliable through-hull passage for hose connections on docked or moored vessels.

Suited for Bronze Fitting Requirements

This fitting suits boat owners and marine technicians who need a UL-listed bronze through-hull with a half-inch hose barb. It is not for installations requiring a different hose diameter or thread standard. Buyers needing a flanged design, composite material, or alternative alloy should look at other options. The part addresses a specific plumbing size and certification need.

Highlights

  • Bronze construction resists corrosion in saltwater
  • NPS threads create a secure hose connection
  • UL 647B listing confirms marine safety compliance
  • C83600 alloy provides strength for thru-hull durability

Specifications

BrandGroco

Questions about this item

What thread standard must the through-hull opening match for the Groco HTH-500 fitting?

The fitting uses NPS straight threads, so the hull opening or mating flange must be cut to the same NPS thread size for a proper seal.

Will the C83600 bronze body resist galvanic corrosion when mounted next to stainless steel hardware on my boat?

C83600 bronze is a copper alloy that sits close to stainless on the galvanic series, so corrosion risk is low; still use a bonding wire or isolating washer if the installation manual recommends it.

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