Sea-Dog 205390-1 Strap Hinge, 316 Stainless Steel, 4-1/8 Inch, Sold in Pairs

The Sea-Dog 205390-1 Strap Hinge is an investment cast 316 stainless steel hinge built for gates, dock box lids, fish holds, and other outdoor marine hardware applications that see frequent use. Its strap design consists of two long, narrow leaves of equal length extending from a single knuckle, giving it a wide swing radius and a low-profile surface mount. Because it is investment cast from 316 stainless steel, the 205390-1 resists corrosion in saltwater and marine environments better than standard stainless or plated steel hardware, making it well suited for hatches, lids, and doors that are exposed to the elements.

The hinge surface mounts using four #10 fasteners per leaf (fasteners not included), and each leaf measures 4-1/8 inches long with a 1 inch maximum width and 3/16 inch thickness. The 205390-1 part number is sold as a pair, giving both hinges needed for a typical gate, lid, or door installation. Its compact size and simple surface-mount design make it a straightforward replacement or upgrade for aging hinges on boats, docks, and outdoor storage boxes.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 205390-1
• Product Type: Strap Hinge
• Material: Investment Cast 316 Stainless Steel
• Overall Length: 4-1/8 inches
• Leaf Width: 2-1/16 inches
• Knuckle Width: 2-1/16 inches
• Mounting Hole Spacing: 1 inch
• Thickness: 3/16 inch
• Maximum Width: 1 inch
• Fastener Size: #10 Flat Head (not included)
• Weight: 0.346 pounds
• Sold As: Pair
• Mounting Style: Surface Mount
• UPC: 035514205092

Fitment

Universal surface-mount hinge for gates, dock box lids, fish holds, hatches, and similar outdoor marine applications; not model-specific.

Frequently Asked Questions

What material is the Sea-Dog 205390-1 strap hinge made from? It is made from investment cast 316 stainless steel, which resists corrosion in saltwater and other marine environments.

How many hinges come in a package? The 205390-1 is sold as a pair, so one package includes two matching strap hinges.

What are the dimensions of the 205390-1 strap hinge? Each leaf is 4-1/8 inches long with a 1 inch maximum width and 3/16 inch thickness, with a knuckle and leaf width of 2-1/16 inches.

What fasteners are needed to install this hinge? Four #10 flat head fasteners per leaf are used to surface mount the 205390-1; fasteners are not included.

What applications is this strap hinge used for? Strap hinges like the 205390-1 are commonly used on gates, dock box lids, and fish holds, and are suited to outdoor applications where the hinge sees frequent use.

How much does the 205390-1 hinge weigh? The Sea-Dog 205390-1 strap hinge weighs 0.346 pounds.

Is the 205390-1 hinge suitable for saltwater use? Yes, its investment cast 316 stainless steel construction is corrosion resistant, making it suitable for saltwater and marine outdoor environments.

Does the strap hinge come pre-drilled for mounting? The 205390-1 is designed for surface mounting with four #10 fasteners per leaf; specific mounting hardware is not included.

What is the difference between a strap hinge and a standard door hinge from Sea-Dog? The 205390-1 strap hinge has two long, narrow leaves of equal length extending from a single knuckle, while Sea-Dog's door hinges use a different leaf shape and fastener count better suited to hatch and door installations.

Is the 205390-1 genuine Sea-Dog hardware? Yes, the 205390-1 is a genuine Sea-Dog part, investment cast from 316 stainless steel.