Marine Stainless Steel Padlock with Key – Multiple Sizes (25 mm, 30 mm, 40 mm, 50 mm, 60 mm)

When it comes to securing your valuables in a marine setting, ordinary padlocks often corrode and seize up. This marine stainless padlock is specifically engineered for life around the water. Each lock features a chrome-plated brass body (for corrosion resistance and durability) paired with a shackle made of AISI 304 stainless steel, ensuring all external parts are protected against rust. The internal locking mechanism is precision-crafted and well-sealed, often utilizing an Abloy-type cylinder – a disc tumbler system known for its high security against picking and smooth operation. This means that even after repeated exposure to salt spray and rain, the padlock will continue to open and close smoothly without sticking.

We offer this padlock in multiple sizes (25, 30, 40, 50, and 60 mm body width) so you can find the right balance of convenience and security for every application. The smaller sizes are lightweight and compact – great for zippers on canvas covers, small tackle boxes, or accessory cases. The medium sizes (30/40 mm) are all-purpose locks for most deck boxes, glove compartments, and hatches where you want reliable locking. The largest (50/60 mm) padlocks provide maximum security – they are hefty and imposing, suitable for high-value compartments like engine bays, gear lockers, or for locking around outboard motors and jet skis with a chain or cable. All sizes come with a set of keys (typically 2 per lock), so you have a spare key available.

• 25 mm Padlock: The smallest variant – excellent for lightweight duties such as locking a logbook or small toolbox, securing cases for electronics, or locking personal drawers. On board, it can be used for crew lockers in cabins or document boxes where a small form-factor lock is sufficient.
• 30 mm & 40 mm Padlocks: Medium class – perfect for locking cockpit lockers, tackle boxes, rope lockers or safety gear cabinets. These sizes balance compactness with solid security and are the most popular choice for general use around the boat.
• 50 mm & 60 mm Padlocks: Large and hefty – meant for serious security tasks. With these, you can lock large hatches, dockside storage boxes, or chain an outboard motor to the transom for theft prevention. The robust locking mechanism and thick shackle offer high resistance to cutting or brute force attempts.
• Maintenance Tip: To maximize the padlock’s lifespan, it’s good practice to occasionally rinse it with fresh water (especially after salt spray) and apply a drop of lubricant into the keyhole. This will keep the action smooth and prevent salt crystallization inside. Although built to be resilient, these padlocks will serve you even longer with minimal care.
• Onboard Security: Using quality padlocks adds an extra layer of protection to your boat. You can confidently leave valuable electronics or tools locked up when the boat is unattended or during off-season storage. Plus, the brass-and-stainless construction means that even after seasons of use, the lock will still look good – no ugly rust streaks on your deck or lockers.