The durability of a padlock is determined by its composition. When buying in bulk, choose materials that match where the locks will be used:

These offer the highest resistance to physical attacks such as cutting or sawing. Look for these when securing high-value industrial equipment.

Highly resistant to corrosion and rust. Brass padlocks are excellent for general indoor use or mild outdoor conditions.

Constructed from multiple layers of metal for added strength. These are often the "workhorse" for medium-security applications like sheds or gates.

Each lock has a unique key. This is the standard for gym or school lockers where every user must have exclusive access to their own space.

The Ultimate Guide to Buying Padlocks in Bulk: Savings, Security, and Scalability