Best Lockout Tagout Locks: A Detailed Guide for Industry Professionals

lockout tagout lock with hasp and tag

Lockout tagout procedures are vital safety measures in industrial settings to ensure that equipment and machines are properly shut off and not restarted before maintenance work is completed. As professionals deeply rooted in ensuring workplace safety, understanding the best tools, especially the right lockout tagout locks for lockout/tagout procedures, is critical.

This guide offers recommendations for professionals and industry leaders on selecting the best LOTO lock to ensure effective and safe lockout/tagout procedures.

What is Lockout Tagout?

Lockout tagout refers to the safety procedures that ensure machines and equipment are safely isolated and cannot be operated during maintenance or servicing. By using lockout tagout locks and tags, workers are safeguarded from unexpected energization, start-ups, or the release of hazardous energy.

Why Lockout Tagout Locks are Essential?

Safety padlocks, specifically designed for LOTO, are the unsung heroes of workplace safety. Unlike standard locks, they are built to withstand industrial rigors, ensuring that machinery remains non-operational during maintenance or servicing, protecting both equipment and employees.

OSHA Requirements for Lockout Padlocks

The Occupational Safety and Health Administration's (OSHA) Standard 1910.147 aims to safeguard workers from the unexpected energization or startup of machinery and equipment, or the release of hazardous energy during service or maintenance activities. When it comes to LOTO padlocks, OSHA has several specific criteria they must meet:

  • Durability: Padlocks must be capable of withstanding the environment they're used in for the duration of the lockout without deteriorating. This includes resistance to corrosion for locks used outdoors or chemical exposure.
  • Identifiability: Padlocks must be identifiable as lockout devices. They should clearly show who has applied the lock, often facilitated by tags that accompany the padlock.
  • Standardization: Across the workplace, lockout devices must be standardized by either color, shape, or size. This helps ensure that everyone can easily identify the purpose of the padlock at a glance.
  • Tamper Resistance: Padlocks used for LOTO purposes should be designed to resist tampering. They should not be easily bypassed or removed without the use of excessive force or unusual techniques.
  • Singular Purpose: The padlocks used for lockout/tagout should only be used for that purpose. They shouldn't be used for other tasks, like locking toolboxes or gates.

5 Best Safety Padlocks for Lockout Tagout

1. TRADESAFE Lockout Tagout Locks Keyed Different

When discussing industrial-grade quality, TRADESAFE lockout tagout locks are in a league of their own. Every facet of these padlocks radiates excellence—crafted with meticulous precision and incorporating only the finest materials. Their superior durability, impact resistance, and non-conductivity make them an irreplaceable asset in rigorous industrial settings.

Boasting their best-seller, TRADESAFE Lockout Padlocks Keyed Differently offers an added layer of employee safety. In this specific keying system, each LOTO lock is paired with a unique key. This design particularly eliminates any potential risks of unintended key duplication, providing ultimate security when several maintenance staff members access the same equipment.

Not only do TRADESAFE LOTO Locks stand firm in their build quality, but their versatility is unmatched with four distinct keying options: Keyed Different, Keyed Alike, Keyed Alike Unlimited, and Keyed Different with Master Keys. The choice of 7 unique color variants further cements their position as the go-to for efficient organization and uncompromised safety.

Key Features:

  • Industrial-grade build quality for extreme durability
  • Rust and corrosion-resistant stainless steel shackle
  • Keyed differently system ensures each padlock has a unique key
  • Engineered with a key-retaining brass core cylinder
  • Available in 7 distinct color variants for easy organization


2. Master Lock Safety Padlocks 410 Series

Master Lock, with its reputation, brings a sense of trust to the table with its LOTO 410 Series. Made from Zenex thermoplastic, these 410 Series lockout tagout locks claim resistance against temperature, chemicals, and electrical challenges. That said, some users have noted that while the internal mechanisms are robust, the outer casing might feel less substantial than expected and somewhat flimsy. It's worth considering this feedback, especially when the safety padlock’s primary role is to ensure safety.

Key Features:

  • Made from robust Zenex thermoplastic
  • Resistant to temperature and chemicals
  • Has a key-retaining brass core cylinder
  • Available in multiple color options for user-specific tasks


3. Brady Nylon Safety Lockout Padlocks

Brady nylon lockout safety padlocks promise both compactness and durability in one package, thanks to its reinforced nylon bodies and steel shackles. They offer several body configurations and a couple of keying options, alongside a choice of colors, which can serve basic organization needs. While they do assert their quality, some users have shared feedback about the padlocks being notably smaller than the typical size for lockout locks, which leads to discussions about their suitability in regular industrial settings.

Key Features: 

  • Reinforced nylon bodies paired with steel shackles
  • Customizable shape, key configurations, and color
  • Has a key-retaining brass core cylinder
  • Available in 9 colors


4. ABUS Aluminum LOTO Lock

ABUS' 72 aluminum lockout padlocks showcase the brand's legacy in innovative solutions. This LOTO lock collection, carved from a lightweight and non-magnetic material, is corrosion-resistant. Its strengthened, anodized body provides an ideal canvas for custom laser engraving, allowing for personalized names or numbers in different colors. However, while corrosion-resistant, these aluminum lockout padlocks can be more susceptible to physical damage.

Key Features:

  • Lightweight, non-magnetic aluminum build
  • Corrosion-resistant design
  • Anodized body ideal for custom laser engraving
  • Has a 5-pin precision cylinder design


5. ULINE Thermoplastic Lockout Padlocks

ULINE, primarily renowned for packaging solutions, has ventured into the safety domain with its thermoplastic lock out locks. These safety padlocks aim to withstand corrosion and other industrial challenges, but given ULINE's primary expertise lies elsewhere, their proficiency in the safety products niche remains to be thoroughly proven.

Key Features: 

  • Made from durable thermoplastic.
  • Designed to resist corrosion and environmental challenges.
  • Has a 6-pin locking system


How to Choose the Best Lockout Tagout Locks

When making a decision about buying the best lockout padlocks for your industry, always consider the specific needs of your environment, the machinery involved, and the preferences and feedback of the workers who will be using them. Below are some factors you can consider when selecting lockout tagout locks:

  1. Material Durability: Depending on the environment, consider whether you need corrosion-resistant materials like stainless steel or non-conductive materials like nylon.
  2. Keying Options: There are several keying options available - 'Keyed Different' (each padlock has its unique key), 'Keyed Alike' (multiple padlocks share the same key), and 'Master Keyed' (each padlock has its unique key, but a master key can open all). The choice largely depends on the organization's needs and the specific scenario.
  3. Visibility and Identification: Bright colors and space for customized tags can make it easier to determine who has locked out a particular piece of equipment, enhancing safety and communication.
  4. Ease of Use: The padlock should be straightforward to apply and remove, but only by the authorized person.
  5. Size and Physical Fit: Ensure the shackle size and padlock design fit the machinery's lockout points.
  6. Security Features: Look for padlocks with features that prevent tampering, such as ball-bearing locking mechanisms or shielded shackles.

Lockout Tagout Locks FAQs

1. What are the OSHA requirements for LOTO padlocks?

OSHA mandates that lockout devices be durable, standardized, identifiable, and only removable by the attaching employee.

2. Are all lockout padlocks corrosion-resistant?

Not all, but many are designed to resist corrosion. It’s crucial to check based on your industry’s needs.

3. What material is best for lockout tagout locks?

This depends on the environment. Aluminum and nylon are popular due to their durability and resistance properties.

4. How often should safety padlocks be replaced? 

This depends on wear and tear. Regularly inspect them, and replace them if they show signs of damage.

5. Why are unique keying options important for lockout tagout locks? 

Unique keys prevent accidental unlocking, ensuring only authorized personnel can remove the lock.

6. Can one employee remove another's LOTO lock? 

OSHA standards mandate that only the employee who placed the LOTO lock should remove it, except in specific circumstances.

7. What step comes after applying locks and tags in the lockout/tagout procedure?

After applying locks and tags, the next crucial step in the lockout/tagout procedure is to ensure the isolation of energy by attempting to start or operate the equipment. This ensures the equipment is de-energized and can't be operated until lockout devices are removed.

8. Are digital or combination safety padlocks safe? 

While they can be used, keyed safety padlocks are preferred for ensuring only authorized removal.

9. Is price an indicator of LOTO lock quality? 

While often correlated, it's essential to consider other factors like material, brand reputation, and keying options.

10. What are the color codes for lock out tag out locks? 

While there isn't a strict standard for color-coding lockout tagout locks, many organizations adopt specific color schemes to easily identify the purpose or ownership of the lock. For example, red might be used for electrical lockouts, while blue might indicate a maintenance lockout. The essential factor is consistency within an organization and clear communication to all employees about the color scheme's meaning.

The material provided in this article is for general information purposes only. It is not intended to replace professional/legal advice or substitute government regulations, industry standards, or other requirements specific to any business/activity. While we made sure to provide accurate and reliable information, we make no representation that the details or sources are up-to-date, complete or remain available. Readers should consult with an industrial safety expert, qualified professional, or attorney for any specific concerns and questions.


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