Sea-Dog 316 Stainless Offset Hinge, Surface Mount
Sea-Dog 316 Stainless Offset Hinge, Surface Mount — Product description
The Sea-Dog offset hinge is cut from 316 stainless steel, the grade that holds up to saltwater. It measures 2-1/8 by 1-1/2 inches with a 5/16 inch offset and mounts to the surface, so it screws straight to a hatch or door with no mortising. Sold as a single hinge.
This is the Sea-Dog offset hinge cut from 316 stainless steel, the grade that actually earns its keep on saltwater boats. It measures 2-1/8 inches long by 1-1/2 inches wide with a 5/16 inch offset built into the knuckle. It's a surface-mount hinge, so it screws straight to the face of your hatch or door. No mortising, no routing a recess. Sold as a single hinge.
The offset is the whole point here. That 5/16 inch step lets the leaf clear a lip or a raised edge, so the door or lid can sit proud of the frame and still swing clean. If you've ever tried to hang a locker lid over a rabbeted edge with a flat butt hinge, you know the problem. This one solves it. Handy on deck boxes, cabin doors, tackle lockers, and any lid where the panel doesn't sit flush with its opening.
Why 316 and not the cheaper 304? Because 316 stainless adds molybdenum, and that's what stands up to chloride. Salt spray, bilge damp, a slip in a brackish creek, this alloy shrugs it off far longer before it starts to tea-stain. On a boat, hinge trouble usually starts as rust bleeding down the gelcoat, then a frozen pin. The 316 alloy buys you years of clean operation. It's the same reason we steer folks toward it for anything living on an exposed deck.
Installation is straightforward. Hold the hinge in position, mark your screw holes, drill your pilots, and drive stainless fasteners. Because it's surface mount, one person can hang a locker lid in a few minutes. We'd suggest bedding the screws in a marine sealant to keep water out of the core and to lock the threads against vibration. Two hinges will carry most lids and small doors. For heavier gear, add a third in the middle.
It's a simple piece of hardware, and it's meant to be. Buy the right alloy once and you won't be back out there with a screwdriver next season.
Key Features
- 316 stainless steel construction stands up to saltwater corrosion far better than standard 304 hardware
- 5/16 inch offset lets the leaf clear a raised lip or rabbeted edge so a proud lid still swings clean
- 2-1/8 inch length by 1-1/2 inch width fits most locker lids, hatches, and small cabin doors
- Surface-mount design screws to the face, so there's no mortising or routing a recess
- Sold as a single hinge so you buy exactly the count your project needs
- Sea-Dog marine deck hardware, manufacturer part number 205350-1
Why Buy from NVN Marine
- Authorized Sea-Dog reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | 5/16 Inch Offset Hinge; 2-1/8 Inch Length x 1-1/2 Inch Width; 316 Stainless Steel; Surface Mount; Single |
|---|---|
| Brand | Sea-Dog |
| Manufacturer Part Number | 205350-1 |
| UPC | 035514205153 |
| Material | 316 Stainless Steel |
| Hinge Type | Offset Hinge |
| Offset | 5/16 Inch |
| Length | 2-1/8 Inch |
| Width | 1-1/2 Inch |
| Mount Type | Surface Mount |
| Quantity | Single (sold individually) |
Frequently asked questions
Is this hinge really 316 stainless steel?
Yes. It's cut from 316 stainless, the marine grade with added molybdenum for better chloride and salt-spray resistance than standard 304. That's what keeps it from tea-staining and seizing up on an exposed deck.
What does the 5/16 inch offset do?
The 5/16 inch offset is a step built into the hinge so a door or lid can clear a raised lip or a rabbeted edge and still swing clean. It's the fix when a flat butt hinge won't sit right over a stepped opening.
How does it mount?
It's a surface-mount hinge. You screw it straight to the face of the hatch or door, so there's no mortising or routing a recess. Mark the holes, drill your pilots, and drive stainless fasteners.
What are the exact dimensions?
The hinge is 2-1/8 inches long by 1-1/2 inches wide, with a 5/16 inch offset built into the knuckle.
Does this come as a pair?
No, it's sold as a single hinge. Most lids and small doors want two, so order the count your project needs. For a heavier lid, add a third in the middle.
Where would I use it?
Deck boxes, cabin doors, tackle lockers, and any lid where the panel sits proud of its opening instead of flush. It's general-purpose marine hardware for wherever you need an offset hinge that won't rust out.
