Master Lock 411 Zenex™ Thermoplastic Safety Padlock
The 411 safety padlock features a durable red Zenex™ thermoplastic body and a metal shackle for lockout-tagout applications. The key-retaining design and high-security cylinder support safe and compliant energy isolation.
| Weight | 0,125 kg |
|---|---|
| Dimensions | 12 × 5 cm |
Questions about this product?
The 411 safety padlock is built for lockout-tagout safety applications. It has a red Zenex™ thermoplastic body that measures 1-1/2 inches (38 mm) wide and 3 inches (75 mm) high. A 1-1/2 inch (38 mm) tall metal shackle provides secure attachment.
The Zenex™ thermoplastic body resists chemicals, moisture, and impact. This material keeps the padlock reliable in harsh industrial environments. The lightweight design also makes daily handling easier.
The padlock uses a key-retaining mechanism. Users can remove the key only after they fully lock the padlock. This feature prevents unlocked padlocks and supports safe lockout behavior.
A high-security 6-pin tumbler cylinder controls key access. The cylinder supports the “one employee, one lock, one key” rule and ensures personal control during maintenance work.
The 411 safety padlock includes write-on labels in multiple languages. Users can add names or job details on site. This improves identification and strengthens lockout-tagout compliance.
Features
- Thermoplastic Safety Padlock
- 38mm wide 76mm tall Thermoplastic red body, shackle with 38mm length
- Designed exclusively for lockout tagout applications
- The durable, lightweight, non-conductive Thermoplastic lock body
- Customize on-site with permanent, write-on labels
- Compliance with “One Employee, One Lock, One Key” best practice
- High security, reserved for safety cylinder
- Key retaining – ensures that padlock is not left unlocked
- Keyed different, 6-pin tumbler with over 40,000 available key changes cylinder, Shelf Pack 6, Master Carton Qty 36
Keying options
“One Employee, One Lock, One Key”
It is important that each employee at a facility has a padlock key that is unique to them. Key charting is critical to prevent duplicate keys from entering the workplace and jeopardizing your lockout/tagout program.

A no-charge Safety Lockout Padlock Key Charting System – critical for Safety Lockout
- Key charting is a record of all the safety padlock key codes assigned to a facility
- It is important that each authorized employee at a site has a unique padlock key that only opens that employee’s safety padlock. This complies with the “one lock, one employee, one key” directive
- To help prevent duplicate keys from jeopardizing your lockout program, register your workplace with Master Lock. Once registered, Master Lock will send you an End User Identification Number for your site’s Key Chart.
- When you use that I.D. number on each additional padlock order, Master Lock will use a new key code for each padlock we manufacture for you. When used properly, this free service helps ensure that each employee caries a key unique to them, eliminating unwanted key duplication in a safety lockout program
KD – Each lock is opened by its own unique key which does not open any other lock in the set – complying with the “One lock, one employee, one key” mantra (standard delivery)
KA – All padlocks in the set are opened by the same key so only one key is necessary to open numerous padlocks – for employees who need many locks, they still only have one key
MK – A master key opens all locks within the system while each lock also has its own unique key – allows for responsible removal of improperly placed or forgotten lockouts according to your emergency notification policy (custom made to order deliver 4 to 6 weeks)













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