Description
Product Overview
The Master Lock 527D Adjustable Shackle Padlock is engineered for durability and versatility. Constructed with a vinyl‑covered aluminum body, the lock combines lightweight strength with a sleek black finish that resists scratches, UV exposure, and corrosion. The shackle is forged from hardened steel, providing superior cut resistance and a 2‑inch width that accommodates a range of applications. Inside, a resettable 5‑pin cylinder and a dual‑lever mechanism deliver enhanced pick and pry resistance, ensuring that the lock remains secure even under attempted tampering. The lock measures 6.75 x 11.25 x 13 inches and weighs approximately 260 grams (9.2 ounces), making it easy to handle while still offering robust protection. Two matching keys are included, each featuring a color‑coded head for quick identification.
![[Product front view showing all components]](https://www.assistivedev.store/wp-content/uploads/2026/08/2b2e2d9509984468b09b215052feb29f.jpg)
Usage
This padlock is ideal for a wide variety of indoor and outdoor scenarios. Use it to secure lockers, storage cabinets, toolboxes, backpacks, briefcases, and tackle boxes. Its adjustable shackle length (2‑3/8″ to 5‑15/16″) provides flexibility for gates, doors, and other access points that require a longer reach. The lock’s weather‑resistant construction makes it suitable for garden gates, sheds, and outdoor storage units, while the resettable cylinder allows you to change the key code without replacing the entire lock. Whether you are a homeowner protecting a garage door, a student safeguarding a locker, or a professional needing reliable security for equipment, the 527D delivers consistent performance.
Why Choose Us
Choosing the Master Lock 527D means selecting a product backed by a brand with over 100 years of lock‑making expertise. Each lock undergoes rigorous quality testing to meet industry standards for strength, durability, and resistance to forced entry. The vinyl‑covered aluminum body not only looks professional but also extends the life of the lock by protecting against rust and wear. The resettable cylinder offers added convenience, allowing you to rekey the lock without the need for a locksmith. Additionally, Master Lock provides responsive customer support and a clear warranty policy, ensuring peace of mind after purchase.
Key Features
- Vinyl‑covered aluminum body resists scratches, UV rays, and corrosion for long‑term durability.
- Hardened steel shackle provides cut resistance and a 2‑inch width for versatile applications.
- Resettable 5‑pin cylinder with dual‑lever mechanism enhances pick and pry protection.
- Adjustable shackle length (2‑3/8″ to 5‑15/16″) offers flexibility for gates, doors, and storage units.
- Includes two matching keys and backed by Master Lock’s dedicated customer support and warranty.
FAQ
Can the shackle be adjusted to fit larger openings?
Yes, the shackle can be extended from 2‑3/8″ up to 5‑15/16″ to accommodate a wide range of opening sizes.
Is the lock suitable for outdoor use?
The vinyl‑covered aluminum body and hardened steel shackle are designed to resist weather, making the lock suitable for outdoor gates, sheds, and storage units.
How do I rekey the lock if I lose a key?
The 527D features a resettable 5‑pin cylinder. By following the rekeying instructions in the user manual, you can change the lock’s key code without replacing the entire lock.
What is the warranty coverage for this padlock?
Master Lock provides a limited warranty that covers manufacturing defects for a specified period. Contact customer service for detailed warranty information.
Can the lock be used on a backpack or luggage?
Absolutely. The lock’s compact size and adjustable shackle make it an excellent choice for securing backpacks, luggage, and other personal items.




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