Keep your shackle hidden to thwart break-in attempts. Also known as hockey puck locks, these padlocks have a fully enclosed shackle on the back for greater security than standard padlocks. Designed to resist bolt cutting and prying, they’re often used on transport vans to prevent theft. Choose these locks if you need locks that each open with a different key. All locks have random key numbers.

For a complete locking system, you'll need a padlock and hasps.

Padlocks with hasps ensure you’ll never misplace the lock body after unlocking your doors. Their key cylinder is located on the front rather than the side like other enclosed-shackle padlocks, which makes opening and closing the lock more convenient. A metal keyhole cover keeps out water and debris to protect the key cylinder from freezing, corroding, or jamming.

Hasps consist of two flanges that attach to a door and a frame or to double doors. Thread your lock’s shackle through the flanges of the hasp to secure them together.

Steel padlocks are stronger than stainless steel padlocks and are zinc or chrome plated for added strength and corrosion resistance. Powder-coated steel padlocks have an additional layer of protection against corrosion. Stainless steel padlocks resist corrosion better than steel padlocks.

Padlocks rated UL 437 are among the most secure padlocks we offer. They’ve been tested to withstand break-in methods such as lockpicking, drilling, shackle cutting, sawing, and hammering for over five minutes. Their keys have a unique design with moveable elements to prevent them from being easily copied. Internal steel plates protect against drills.

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

Eliminate access to the most vulnerable part of any padlock—the shackle. Also known as hockey puck locks, these padlocks have a completely enclosed shackle on the back for better security than standard padlocks. Designed to resist bolt-cutting and prying attacks, they’re often used on transport vans to prevent theft. Choose these locks if you want individual locks or groups of locks that open with their own key, but also open with a master key (sold separately).

Steel padlocks are chrome plated for added corrosion resistance and strength.

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. They cannot be sold outside of the United States due to product regulations.

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.

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