Pro Series Padlocks from Master Lock. High security padlocks for industrial or commercial applications. Designed to withstand the most aggressive of physical attacks.
Standard features include:
- Hardened BORON alloy steel shackle protects against sawing or cutting
- Dual ball-bearing locking design protects against prying and hammering
- Laminated steel body for high impact resistance
- Five-pin cylinders make these locks virtually impossible to pick
- Weather-resistant thermal plastic lock cover to keep out the elements.
6321 Series features a steel shackle guard that gives further protection against bolt cutters and saws, dimensions are: 2-1/8" wide. Shackle is 5/16" diameter. Shackle clearance is 3/4" vertical, 7/8" horizontal clearance. Available keyed alike or keyed different. (See Related Items)
Note: 6321 Series does
NOT feature the weather resistant shackle collars of the 6121 series.
