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.

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.