Master Lock 178D Padlock – Set Your Own 4-Digit Combination, Weather Resistant

Strong, versatile security for daily use

The Master Lock 178D Set Your Own 4-Digit Combination Padlock is built around a solid 2-inch-wide body for strength and durability. The hardened steel shackle, 5/16 inch in diameter, resists cutting and sawing, adding a tangible layer of security in a range of environments.

With thousands of possible four-digit combinations, you can personalize access quickly and securely. The four-digit dial is straightforward to operate, and changing the code is simple with the included tool, allowing you to adapt access as needs evolve.

Practical uses that fit everyday needs

• Indoor and outdoor versatility makes it suitable for gym lockers, school lockers, gates, and sheds.
• Set your own four-digit combo for easy recall and controlled access in shared spaces.

Key specifications at a glance

• 2 in (51 mm) wide solid lock body for strength and reliability
• 5/16 in (8 mm) hardened steel shackle for cut resistance
• Shackle length 1 in (25 mm); lock width 1 in (25 mm)
• Weather-resistant design suitable for indoor and outdoor use
• Includes a combo change tool and a preset 0-0-0-0 for initial access
• Limited Lifetime Warranty from Master Lock for long-term peace of mind

In real-world use, the 178D feels compact yet dependable in hand, delivering a reassuring level of security when you need to restrict access to a cabinet, a gate, or a storage area. It’s easy to remember once you set a code, yet sufficiently complex to deter casual attempts. The combination can be updated as needs change, offering flexibility without replacing the lock.

Note: The lock ships with a standard preset and includes a tool to help you set your preferred four-digit code. This combination padlock is designed to withstand typical outdoor exposure and everyday use, providing a practical balance of durability, convenience, and cost-effective protection.