Customers and manufacturers often call a round padlock a disc padlock or discus padlock. You’ll also see it referred to as a round lock or round disc lock.

• Design: The circular body helps shield the shackle, making it harder to access with common tools.
• Typical uses: Storage units, sheds, gates, garages, trailers, and outdoor equipment.
• Materials: Many feature stainless steel shells and hardened steel shackles for corrosion resistance and durability.
• Sizes: Common body widths include 60mm, 70mm, 80mm, and 90mm, with varying shackle diameters and clearances.

Names can vary by listing, but they generally describe the same round, shrouded style.

Disc-style round padlocks are designed to make bolt cutting more difficult, though no lock is completely cut-proof.

• Shrouded shackle: The circular body shields most of the shackle, reducing access for cutter jaws.
• Hardened steel: Toughened shackles can be harder to penetrate than mild steel.
• Thicker diameter: A thicker shackle generally requires more force and larger tools to compromise.
• Snug fit: Pair the lock with a hasp that leaves minimal exposed shackle.

For stronger deterrence, combine your lock with a sturdy hasp, good lighting, and other security measures. Always use locks responsibly and follow property rules.

Disc padlocks are a popular choice for storage units because their round, shrouded design helps protect the shackle and resist common attacks. Actual security depends on the lock’s build and the hardware it’s attached to.

• Deterrence: Circular bodies and limited shackle exposure reduce easy access.
• Construction: Stainless steel shells and hardened shackles can improve durability and cut resistance.
• Fit: A tight fit to the hasp minimizes leverage points.
• Layering: Pair the lock with a robust hasp, quality door hardware, and visibility measures.

While results vary, a well-fitted disc lock can offer solid everyday security for typical storage scenarios.

Pick a size that fits your hasp snugly and covers as much shackle as practical.

1. Measure the hasp: Note the hole diameter and the thickness of the staple where the shackle passes through.
2. Check specs: Compare to the lock’s body width (often 60–90mm), shackle diameter (about 9–11mm), and clearance height (commonly around 1/2–5/8 inch).
3. Aim for a tight fit: Minimal exposed shackle reduces leverage points.
4. Confirm compatibility: Ensure the hasp style works with disc-shaped locks.

If you’re securing a facility with specific rules, it’s a good idea to verify any lock size or style requirements before purchasing.

Both can be effective; the best choice depends on how you’ll use the lock and who needs access.

• Keyed: Familiar operation, multiple keys can be shared. Some sets are keyed alike, which can simplify access across several locks.
• Combination: No keys to carry or misplace; a 4-digit code is convenient for shared use. Many models offer resettable codes.
• Environment: Look for weather-resistant materials for outdoor use, regardless of type.
• Access needs: Pick the option that fits your security habits and the number of users.

If a facility specifies a lock style, it’s wise to follow those guidelines.