Master Lock S31 Zenex™ Thermoplastic Safety Padlock
The S31 safety padlock features a Zenex™ thermoplastic body and a marine-grade stainless steel shackle for lockout-tagout applications in corrosive environments. The lightweight design and key-retaining function support safe and reliable energy isolation.
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| Colour: | Black, Blue, Green, Orange, Purple, Red, White, Yellow |
Questions about this product?
The S31 safety padlock is designed for lockout-tagout use in corrosive and demanding environments. It uses a strong Zenex™ thermoplastic body combined with a stainless steel shackle. This design supports reliable use in industrial settings.
The Zenex™ body resists chemicals, UV exposure, and extreme temperatures. It keeps its strength in wet, outdoor, and chemical environments. The low weight also makes the padlock easy to carry during daily work.
The stainless steel shackle offers strong resistance to rust and corrosion. This makes the S31 safety padlock suitable for wet areas, chemical plants, food processing sites, and coastal locations.
The padlock uses a high-security cylinder made only for safety applications. A key-retaining mechanism forces the user to lock the padlock before removing the key. This prevents unlocked padlocks and supports correct lockout behavior.
The S31 safety padlock combines corrosion resistance, durability, and personal key control. It helps teams apply safe and compliant lockout-tagout procedures in harsh operating conditions.
Features
- S31 thermoplastic safety padlock
- 4,76mm diameter shackle fits more applications
- Marine grade 316 stainless steel shackle provides superior corrosion resistance
- 35mm wide, 48mm tall thermoplastic body, with 38mm shackle length
- Patented design complies with the one employee, one lock, one key best practice
- Key retaining – ensures padlock is not accidentally left unlocked
- Stands up to chemicals, extreme temperatures, and is UV stable
- Includes English write-on “Danger” and “Property Of” labels; 14 language options available for global identification purposes
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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