Tall, tough, and tricky to tamper with, these padlocks not only have an extra-long shackle, but they've been tested to stand up against the harshest break-in methods. They’re rated UL 437 or EN 12320 to prevent access from lockpicking, cutting, prying, hammering, and more. An internal plate even blocks drill bits from penetrating the cylinder. Made from materials that resist corrosion from rain and snow, they’ll work smoothly when exposed to the elements. Choose them if you need several locks that open with the same key.

Locks with a dual-locking shackle prevent attempts to force them open from prying or shimming. Both ends of the shackle lock inside the padlock body.

Stainless-steel-body locks are stronger than brass-body locks, but they’re not as corrosion resistant. Chrome-plated brass-body locks have excellent corrosion resistance, but they’re not as strong as stainless-steel-body locks.

Chrome-plated hardened boron alloy and hardened steel shackles are stronger than stainless steel shackles. Stainless steel shackles have excellent corrosion resistance, but they’re not as strong as hardened steel shackles.

Locks with a keyhole cover come with a tethered metal cap to keep water and debris out of the locking mechanism. This helps keep it from freezing, corroding, or jamming.

Padlocks rated UL 437 have been tested to withstand break-in methods for over five minutes. They’re comparable to those that meet EN 12320 Grade 5. Both their cylinder and keys have a unique design that prevents them from being easily copied.

For technical drawings and 3-D models, click on a part number.

Rest assured your outdoor storage containers, gates, and valuable equipment stay secure with these padlocks. Made from materials that resist corrosion from rain and snow, they'll operate smoothly even when exposed to the elements. Some of the most secure padlocks we offer, all are rated either UL 437 or EN 12320. They’ve passed a test to fend off attacks such as lockpicking, hammering, and cutting, and an internal plate blocks drill bits from piercing the cylinder. Both ends of the shackle lock inside of the body, preventing attempts to force them open with prying or shimming. Choose them if you need several locks that open with the same key.

Brass-body locks have excellent corrosion resistance, but they’re not as strong as hardened-steel-body locks.

Hardened steel shackles are stronger than stainless steel shackles. Stainless steel shackles have excellent corrosion resistance, but they’re not as strong as hardened steel shackles.

Padlocks rated UL 437 have been tested to withstand break-in methods for over five minutes. They’re comparable to those that meet EN 12320 Grade 5. Both their cylinder and keys have a unique design that prevents them from being easily copied.

For technical drawings and 3-D models, click on a part number.

Also known as hockey puck locks, these padlocks have a fully enclosed shackle located on the back for greater security than standard padlocks. Because their design prevents bolt-cutting and prying attempts, they’re often used on transport vans. Choose these locks if you need several locks that open with the same key.

Stainless steel padlocks are more corrosion resistant than steel padlocks. Rated UL 437, they’ve been tested to withstand break-in methods such as lockpicking, drilling, shackle cutting, sawing, and hammering for over five minutes. Among the most secure padlocks we offer, both their cylinder and keys have a unique design that prevents them from being easily copied. Internal steel plates protect against drills.

Add an optional hasp for a complete locking system. These hasps consist of two flanges that attach to a door and a frame or to double doors, like those on the back of a transport van. Thread the shackle through the flanges of the hasp to secure them together.

Padlocks that cannot be sold to the listed areas are restricted by product regulations.

For technical drawings and 3-D models, click on a part number.