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

This lock is the medium-sized product in the Masterlock 6300 series of high security padlocks.

Larger in size than its counterpart, the 6321, this lock provides superior protection for gates, containers, machinery, storage areas and much more. 

The lock, which is made from high quality laminated steel, comes with a protective Zenex thermoplastic cover which allows it to be used both indoors and outdoors. The lock's shackle is made from boron alloy and shrouded within the lock to prevent cutting and forced removal.

Key Features

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

Lock Dimensions