SS316 Heavy Duty Piano Hinge - 1.5mm Marine Grade (1500mm x 76mm)
Mechanical Fasteners • Top Pick
Check PriceYour deck hatch is sagging. The hinge is bleeding rust onto the gelcoat. Every time you hit a swell, that heavy engine cover rattles like a bucket of bolts. You’re using hardware meant for a kitchen cupboard, not the open sea. It’s a disgrace. Cheap gear fails when the weather turns foul. Every skipper knows it.
That big-box 'stainless' is a lie. It’s likely 304 grade or worse—plastic junk disguised as metal. Salt spray eats 304 for breakfast. It pits. It seizes. It snaps. You want to spend your weekend lubricating a seized pin or actually catching fish? Thought so. If you’re building a serious vessel, stop cutting corners with hardware that can’t handle the brine.
The SS316 Heavy Duty Piano Hinge - 1.5mm Marine Grade (1500mm x 76mm) is the only way to fix it right. This isn't some flimsy strip of tin. It’s 1500mm of pure AISI 316 stainless steel. The 1.5mm leaf thickness provides the backbone needed for heavy lockers. It distributes the load across the entire 76mm width. No more stress points. No more tea-staining. This is industrial-spec gear for men who respect their craft.
| Feature | SS316 Heavy Duty Piano Hinge | Generic Alternatives |
|---|---|---|
| Material | AISI 316 (Marine Grade) | 304 Stainless or Plastic |
| UV Resistance | Immune | Degrades/Cracks |
| Price | Premium/Investment | Cheap/Disposable |
Pair this with a 316 Stainless Steel Boat Butt Hinge - Heavy-Duty Cast (50x50mm) for smaller lockers and a Marine Anti-Rattle Hatch Latch - AISI 316 Stainless Steel (113mm) to keep things quiet in the chop. If you're welding up a rail, use a 316 Stainless Steel Round Base 90° Boat Handrail Fitting (22mm/25mm). Do it once. Do it right.
- Molybdenum
- An alloying element added to 316 stainless steel to increase corrosion resistance, specifically against chlorides and saltwater.
- Countersunk
- A hole conical-bored to allow the head of a flat-head screw to sit flush with the surface of the hinge leaf.
For more advice on metalwork, check the TinBoats Aluminum Forum. Those boys know a thing or two about salt-water corrosion.
FAQ
- Will this hinge rust in direct saltwater contact?
- No. Unlike standard 304 stainless steel, this hinge is forged from AISI 316 grade stainless steel which includes 2-3% Molybdenum. This specific chemical composition prevents pitting and crevice corrosion in high-chloride saltwater environments.
- Is this hinge strong enough for a heavy engine hatch?
- Yes. The continuous 'piano' design distributes weight evenly along the entire 1500mm length. The 1.5mm leaf thickness and precision-fitted 4.0mm pin are engineered to handle heavy industrial and marine loads without sagging or binding.
- Does it require special screws for the countersunk holes?
- The hinge features precision-punched countersunk holes designed for standard flat-head marine screws. This ensures the screw head sits perfectly flush with the leaf surface, providing a seamless finish and preventing snags.
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