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Marine Hardware

Choose Marine Hardware That Fits the Boat and the Job

Shop marine hardware for repair, replacement, refit, and new-installation projects. The right fitting depends on more than appearance: confirm the mounting footprint, hole spacing, fastener size, material, load direction, surface thickness, and exposure to saltwater before ordering.

What to Check Before You Buy

  • Material: Match stainless steel, bronze, aluminum, or polymer hardware to the application and surrounding metals.
  • Measurements: Compare overall dimensions, cutout size, bolt pattern, thread type, and required clearance.
  • Load and use: Hardware used for lifting, towing, anchoring, seating, or safety equipment must be rated and installed for that specific purpose.
  • Corrosion control: Dissimilar metals can accelerate galvanic corrosion. Use suitable isolation, sealant, and fasteners for the boat and environment.
  • Installation: Through-bolting, backing plates, bedding compounds, and access behind the mounting surface may be required.

Plan the Complete Installation

Hardware projects often connect with Boat Outfitting, Anchoring & Docking, Marine Plumbing & Ventilation, Marine Electrical, and Marine Lighting. Review the product specifications and manufacturer instructions before drilling or replacing an existing fitting. For structural, below-waterline, lifting, or safety-critical work, professional installation is recommended.

Marine Hardware Buying Questions

Can I replace boat hardware using only the overall size?

No. Verify the full footprint, mounting-hole pattern, fastener diameter, thread, surface thickness, clearance, and intended load. Similar-looking parts may not be direct replacements.

Which metal is best for saltwater use?

There is no universal choice. The correct material depends on strength, immersion, surrounding metals, maintenance, and manufacturer requirements. Marine-grade stainless steel and bronze are common, but incorrect metal combinations can cause rapid corrosion.

Do I need a backing plate?

Hardware exposed to high or repeated loads often needs load-spreading support. Follow the boat builder and hardware manufacturer instructions; consult a qualified marine technician when the structure or rating is uncertain.

Need help narrowing the options? Use the category filters and product specifications, then contact MarineWaze with the application, measurements, boat material, and existing part number.

  • Product
  • Qty in Cart
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  • Sea-Dog Barrel Bolt - Chrome Finish - 2" [222501-1]
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    Sea-Dog Barrel Bolt - Chrome Finish - 2" [222501-1]

    Sea-Dog

    $11.35
    Barrel Bolt - Chrome Finish - 2" Constructed of chrome plated extruded brass. These surface mounted Barrel Bolts provide additional security as either a primary or back-up locking system. Ideal for...
    $11.35
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    Qty in Cart: 0
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    $11.35
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  • Sea-Dog Barrel Bolt - Chrome Finish - 1-1/2" [222500-1]
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    Sea-Dog Barrel Bolt - Chrome Finish - 1-1/2" [222500-1]

    Sea-Dog

    $9.95
    Barrel Bolt - Chrome Finish - 1-1/2" Constructed of chrome plated extruded brass. These surface mounted Barrel Bolts provide additional security as either a primary or back-up locking system. Ideal...
    $9.95
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    Qty in Cart: 0
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    $9.95
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  • Sea-Dog Screw-Out Deck Plate - Black - 6" [335765-1]
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    Sea-Dog Screw-Out Deck Plate - Black - 6" [335765-1]

    Sea-Dog

    $15.35
    Screw-Out Deck Plate - Black - 6" Sea-Dog® Screw-Out Deck Plates are molded to the highest standards using top quality UV stabilizers and antioxidants. When installing, use silicone sealant on hull...
    $15.35
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    Qty in Cart: 0
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    $15.35
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  • Sea-Dog Screw-Out Deck Plate - White - 6" [335760-1]
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    Sea-Dog Screw-Out Deck Plate - White - 6" [335760-1]

    Sea-Dog

    $15.35
    Screw-Out Deck Plate - White - 6" Sea-Dog® Screw-Out Deck Plates are molded to the highest standards using top quality UV stabilizers and antioxidants. When installing, use silicone sealant on hull...
    $15.35
    Add to Cart
    Qty in Cart: 0
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    $15.35
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  • Sea-Dog Screw-Out Deck Plate - Black - 5" [335755-1]
    Add to Cart

    Sea-Dog Screw-Out Deck Plate - Black - 5" [335755-1]

    Sea-Dog

    $14.45
    Screw-Out Deck Plate - Black - 5" Sea-Dog® Screw-Out Deck Plates are molded to the highest standards using top quality UV stabilizers and antioxidants. When installing, use silicone sealant on hull...
    $14.45
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    Qty in Cart: 0
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    $14.45
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  • Sea-Dog Screw-Out Deck Plate - White - 5" [335750-1]
    Add to Cart

    Sea-Dog Screw-Out Deck Plate - White - 5" [335750-1]

    Sea-Dog

    $13.75
    Screw-Out Deck Plate - White - 5" Sea-Dog® Screw-Out Deck Plates are molded to the highest standards using top quality UV stabilizers and antioxidants. When installing, use silicone sealant on hull...
    $13.75
    Add to Cart
    Qty in Cart: 0
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    $13.75
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  • Sea-Dog Screw-Out Deck Plate - Black - 4" [335745-1]
    Add to Cart

    Sea-Dog Screw-Out Deck Plate - Black - 4" [335745-1]

    Sea-Dog

    $12.65
    Screw-Out Deck Plate - Black - 4" Sea-Dog® Screw-Out Deck Plates are molded to the highest standards using top quality UV stabilizers and antioxidants. When installing, use silicone sealant on hull...
    $12.65
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $12.65
    Subtotal:
  • Sea-Dog Screw-Out Deck Plate - White - 4" [335740-1]
    Add to Cart

    Sea-Dog Screw-Out Deck Plate - White - 4" [335740-1]

    Sea-Dog

    $11.95
    Screw-Out Deck Plate - White - 4" Sea-Dog® Screw-Out Deck Plates are molded to the highest standards using top quality UV stabilizers and antioxidants. When installing, use silicone sealant on hull...
    $11.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
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    $11.95
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  • Sea-Dog Stainless Steel Drain Cover - 3-1/4" [331600-1]
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    Sea-Dog Stainless Steel Drain Cover - 3-1/4" [331600-1]

    Sea-Dog

    $7.65
    Stainless Steel Drain Cover - 3-1/4" Stamped 304 Stainless SteelWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other...
    $7.65
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    Qty in Cart: 0
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    $7.65
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  • Sea-Dog Stainless Steel Round Louvered Vent - 5" [331425-1]
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    Sea-Dog Stainless Steel Round Louvered Vent - 5" [331425-1]

    Sea-Dog

    $12.75
    Stainless Steel Round Louvered Vent - 5" Round Louvered Vents allow air in while keeping water out. Installs with four #6 FH fasteners (not included). Corrosion resistant stamped 304 stainless steel...
    $12.75
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    Qty in Cart: 0
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    Price:
    $12.75
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