Gen3 Marine Stainless Steel 3 Inch Straight Thru-Hull Fitting, 5/8 Inch Hose ID

The Gen3 Marine Stainless Steel Straight Thru-Hull Fitting (5-9023) is a through-hull hardware piece built for marine plumbing runs such as bilge pumps, livewells, washdowns, and cooling intakes. It is machined from stainless steel with a mirror-polish finish, giving it long-term corrosion resistance in marine environments along with a clean, finished appearance on the hull. The fitting uses a straight thread design, distinguishing it from tapered or angled thru-hull styles, and is sized to accept 5/8 inch inner-diameter hose for a secure connection point when paired with an appropriate hose clamp.

Overall length is 3 inches with a 2.7 inch thread length, allowing it to pass through typical hull thicknesses while leaving enough thread engaged for a locking nut or backing plate on the interior side. The compact 1.88 x 1.88 x 3 inch footprint makes it suitable for tight installation locations below the waterline or in transom applications. At 0.4 pounds, it is lightweight enough for straightforward handling during installation or replacement of an existing thru-hull fitting.

Specifications

• Brand: Gen3 Marine
• Manufacturer Part Number: 5-9023
• Material: Stainless Steel
• Finish: Mirror Polish
• Thread Type: Straight Thread
• Total Length: 3 inches
• Thread Length: 2.7 inches
• Hose Inner Diameter: 5/8 inch
• Item Dimensions: 1.88 x 1.88 x 3 inches
• Weight: 0.4 pounds
• UPC: 810037462333

Frequently Asked Questions

What size hose does this thru-hull fitting accept? The Gen3 Marine 5-9023 thru-hull fitting is sized for 5/8 inch inner-diameter hose.

Is the 5-9023 fitting straight or angled? It is a straight-thread thru-hull fitting, not an angled or tapered design.

What material is the fitting made from? Stainless steel with a mirror-polish finish, chosen for corrosion resistance in marine environments and a clean appearance on the hull.

How long is the Gen3 Marine 5-9023 thru-hull fitting? Total length is 3 inches, with 2.7 inches of that being usable thread length.

How much does this thru-hull fitting weigh? The 5-9023 weighs 0.4 pounds.

What are the overall dimensions of the fitting? It measures 1.88 x 1.88 x 3 inches.

What is this fitting typically used for? Thru-hull fittings like the Gen3 Marine 5-9023 are used to route hose through the hull for applications such as bilge pump discharge, livewell intake, washdown pumps, and cooling water intake.

Do I need a backing nut or locknut for installation? Yes, a thru-hull fitting of this type is installed through the hull and secured on the interior side with a locking nut, and the 2.7 inch thread length on the 5-9023 leaves enough thread to engage one.

Will this fitting fit any boat hull? The Gen3 Marine 5-9023 is a universal thru-hull fitting sized by thread and hose diameter rather than by a specific boat make or model, so fitment depends on matching hull thickness and hose size rather than a particular vessel.

Does the fitting come polished or does it need finishing? It ships with a mirror-polish stainless steel finish already applied, ready to install.

Is a hose clamp included with the 5-9023? The listing covers the stainless steel thru-hull fitting itself; a hose clamp sized for 5/8 inch hose should be sourced separately to complete the connection.