GROCO 1 Inch Bronze Combo Scoop Thru-Hull Fitting with Nut - STH-1000-W

The GROCO STH-1000-W is a 1 inch bronze combo scoop thru-hull fitting supplied complete with mounting nut. It is designed to be through-bolted into a boat hull to provide a fixed, corrosion-resistant passage point for raw water intake or discharge lines below the waterline. Cast from solid bronze, this fitting is built to withstand continuous saltwater and freshwater immersion without the pitting or corrosion that can affect lower-grade metals over time, making it suitable for long-term below-waterline service.

The combo scoop body style gives installers flexibility in how the fitting is oriented in the hull, and the included nut allows for a complete, ready-to-install assembly without needing to source a separate matching nut. The 1 inch size makes it a common choice for smaller raw water intake runs, bilge pickups, and similar plumbing lines that call for a 1 inch through-hull connection. As a solid bronze part, it is intended to pair with bronze or compatible seacocks and hose fittings elsewhere in the through-hull assembly for consistent corrosion resistance across the connection.

Specifications

• Brand: GROCO
• Manufacturer Part Number: STH-1000-W
• Type: Combo Scoop Thru-Hull Fitting
• Size: 1 inch
• Material: Bronze
• Color/Finish: Bronze
• Included Hardware: Mounting nut
• Number of Items: 1
• Weight: 1.25 pounds
• UPC: 742985063907

Frequently Asked Questions

What size is the GROCO STH-1000-W thru-hull fitting? The STH-1000-W is a 1 inch combo scoop thru-hull fitting, sized for 1 inch raw water intake or discharge plumbing runs.

Is the STH-1000-W made of bronze? Yes, this GROCO thru-hull fitting is made of solid bronze, chosen for its resistance to corrosion in continuous saltwater or freshwater immersion below the hull.

Does the STH-1000-W come with a nut included? Yes, the GROCO STH-1000-W ships with its mounting nut included, so no separate nut needs to be purchased for a complete installation.

What is included in the box with this part? The package contains one GROCO STH-1000-W bronze combo scoop thru-hull fitting and its matching nut, sold as a single complete unit.

What is a combo scoop thru-hull used for? A combo scoop thru-hull fitting like the STH-1000-W is installed through the hull below the waterline to create a fixed connection point for raw water intake or discharge hose lines.

Is this a genuine GROCO part or an aftermarket copy? The STH-1000-W is a genuine GROCO product, identified by GROCO's own part number and manufactured by GROCO, not a generic aftermarket substitute.

How much does the STH-1000-W weigh? The GROCO STH-1000-W bronze combo scoop thru-hull with nut weighs 1.25 pounds.

Will bronze corrode over time below the waterline? Bronze is used specifically in below-waterline fittings like the STH-1000-W because it resists the corrosion and pitting that can affect lower-grade metals in continuous marine water exposure.

Can the STH-1000-W be used for both intake and discharge lines? The STH-1000-W is a combo scoop style thru-hull fitting suited to raw water intake or discharge plumbing where a 1 inch through-hull connection is needed.

What material is best paired with this bronze thru-hull fitting? For consistent corrosion resistance, the bronze STH-1000-W thru-hull is best paired with bronze or bronze-compatible seacocks and hose fittings in the same plumbing run.