Perko 0350 Thru-Hull Connection, Plain Bronze, Hose Barb, Above Waterline

Overview

The Perko Thru-Hull Connection for use with Hose is a plain bronze thru-hull fitting for routing hose discharge through the hull on above-waterline installations. The range shown here covers hose sizes from 5/8 inch to 1-1/2 inch, with mounting hole diameters from 13/16 inch to 1-7/8 inch and maximum hull thickness ratings from 1-1/16 inch to 1-7/8 inch, depending on the selected size.

Each fitting is made from cast bronze with a plain finish. The flange is machined to sit tightly against the hull and includes a bedding groove to help retain sealant during installation. The neck is threaded to approximately 3/16 inch from the flange, which helps with nut engagement while leaving room for the flange and bedding compound to seat properly.

This fitting is not recommended for use below the waterline. It suits above-waterline hose outlets such as cockpit drains, sink drains, livewell or baitwell overflows, and similar discharge points where the hose size, hull thickness, and mounting hole can be matched before drilling.

Key features

• Plain cast bronze construction for marine plumbing applications where bronze hardware is preferred.
• Machined flange with a bedding groove to help hold sealant at the hull surface during installation.
• Threaded neck extends to approximately 3/16 inch from the flange for secure nut installation.
• Available in hose sizes from 5/8 inch through 1-1/2 inch in the listed configurations.
• Mounting hole and maximum hull thickness vary by size, making fit confirmation important before replacing an existing thru-hull.
• Intended for above-waterline hose connections and not recommended for below-waterline use.

Variants

This Perko thru-hull connection is offered in several hose-size configurations. Across the listed plain bronze variants, the main differences are hose size, mounting hole diameter, maximum hull thickness, and flange outside diameter.

The smaller sizes suit lighter hose runs and tighter locations, while the larger sizes allow higher-capacity drains or discharge lines where the boat already uses a matching hose and hull opening. Before ordering, match the hose inside diameter, check the drilled hole requirement, and confirm that the hull thickness at the mounting point stays within the listed limit for that configuration.

Installation and fit

Fit should be checked from both sides of the hull before installation. The hose size must match the plumbing run, the mounting hole must match the selected fitting, and the hull thickness must not exceed the rating for that variant. The flange seats on the exterior surface, so the surrounding hull area should be fair enough for sealant to compress evenly.

Because the flange includes a bedding groove, sealant can remain concentrated where the fitting meets the hull. As with any thru-hull work, the hole edge, bedding surface, backing area, nut, and hose clamp access should all be planned before final assembly.

Use cases on board

This fitting is a practical match for boat owners replacing an existing above-waterline bronze thru-hull or laying out a new hose discharge where plain bronze hardware is specified. It is especially relevant on fishing boats, cruisers, and sailboats with drain or overflow plumbing that exits through the topsides or transom above the static waterline.

Maintenance and care

Inspect the fitting as part of regular hull and plumbing checks, especially around the flange, bedding compound, hose connection, and retaining nut. Look for movement, staining, cracked sealant, hose wear, or clamp corrosion, and address any issue before the boat returns to service.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

Learn more.

Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

Learn more.

Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

Learn more.