What material should marine hardware be made of?

For most exposed hardware, 316 stainless steel is the marine standard — it resists salt corrosion far better than 304 stainless or plated steel. Marine-grade aluminum, UV-stabilized nylon, and King StarBoard are also common for non-structural fittings.

How do I know a replacement seat or hatch will fit?

Measure the mounting pattern (bolt spacing), the cutout or base dimensions, and any post diameter or height on the part you’re replacing. Match those to the new part’s specs — outfitting parts follow common sizes but are not universal, so confirming dimensions avoids returns.

Do I need backing plates for deck hardware?

For anything that takes load — grab rails, cleats, ladder steps, seat pedestals — yes. A backing plate spreads the load across a larger area of the deck or transom so fasteners don’t pull through under stress.

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Sea-Dog

Sea-Dog Stainless Steel & Nylon Hinge Adjustable Angle

Manufacturer: Sea-DogPart #: 270260-1SKU: 78907

Stainless Steel

$18.15● In stock

Add $80.85 more to qualify for free shipping.

Item #: 78907

Category: Accessories

● In stock — ships fast from US warehouses

Ships from US warehouses
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Description

Stainless Steel & Nylon Hinge Adjustable Angle These Top Mount Hinge Fittings are designed to mount horizontally and attach an eye end in Bimini top applications. Concave Hinges are designed to rail mount on 1” tubing.

Angled Hinges are used for mounting items on slanted surfaces like sloped gunwales. 180° Adjustable Hinge allows universal mounting at almost any angle including vertical mounting.

Removable Pin Deck Hinges feature a spring loaded quick release pin for easy top removal. 1/4” or 5/16” pin size.

Constructed of corrosion resistant investment cast 316 stainless steel. Installs with two FH fasteners (not included).

California Prop 65 Warning: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Specifications

Brand	Sea-Dog
Part Number	270260-1
EverTide SKU	78907
UPC	035514270687
Material	Stainless Steel

Specifications are provided by the manufacturer. Confirm fitment for your application before ordering, or contact us and we'll help.

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Returns & warranty

Returns are accepted within 30 dayson items that are unused and in their original packaging. Some items may be subject to a manufacturer restocking fee. Special-order items may not be eligible — if you're unsure, ask us before ordering.

Sea-Dog productscarry the manufacturer's standard warranty. For a warranty claim or a return authorization, see our full returns policy or contact us.

Boat Outfitting — frequently asked

What material should marine hardware be made of?: For most exposed hardware, 316 stainless steel is the marine standard — it resists salt corrosion far better than 304 stainless or plated steel. Marine-grade aluminum, UV-stabilized nylon, and King StarBoard are also common for non-structural fittings.
How do I know a replacement seat or hatch will fit?: Measure the mounting pattern (bolt spacing), the cutout or base dimensions, and any post diameter or height on the part you’re replacing. Match those to the new part’s specs — outfitting parts follow common sizes but are not universal, so confirming dimensions avoids returns.
Do I need backing plates for deck hardware?: For anything that takes load — grab rails, cleats, ladder steps, seat pedestals — yes. A backing plate spreads the load across a larger area of the deck or transom so fasteners don’t pull through under stress.

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