This lock is available with your choice of keying system. Use the dropdown box above to make a selection when placing your order.

• Keyed Alike - all locks in a set open with the same key
• Keyed Different - each lock in a set opens with a specific key
• Master Keyed - as Keyed Different but includes one key that opens all locks in a set

A high security padlock, the Masterlock 6321 provides heavy-duty protection for your gates, machinery and other security applications both indoors and out.

The lock is made from high quality laminated steel with a Zenex thermoplastic cover for superior protection. The shackle, which is made from robust boron alloy, is shrouded inside the lock for solid protection against cutting, forced removal and other forms of stress.

Key Features

• Laminated steel body with Zenex thermoplastic cover
• Boron alloy shackle
• Solid iron shackle protection
• Dual ball bearing locking

Lock Dimensions