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Master Lock No. S31 Safety Lock


For No. S31 Lock Covers

For No. S31 Extra Cut Keys

For No. S31 Lock Master Keys

Master Lock No. S31 Lock Safety Lockout Tagout Padlock

  • 3/16in (4.76mm) diameter shackle fits more applications
  • Marine Grade 316 Stainless Steel Shackle provides superior corrosion resistance
  • 1-3/8in (35mm) wide, 1-7/8in (48mm) tall Thermoplastic body, with 1-1/2in (38mm) shackle clearance
  • Patented design complies with the OSHA guideline of "one employee, one lock, one key" directive
  • Key Retaining (KR) - ensures padlock is not accidentally left unlocked. Padlock must be locked to remove key
  • 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
  • S142 Photo identification label available for immediate user recognition
  • All No. S31 padlocks come with 1 Key per Lock (Master Keys are sold separate)
  • 6-pin tumbler - Master Safety W401 Cylinder - with over 40,000 available key changes cylinder
  • Master Lock S31 Series Catalog
  • S31 Series Laser Engraving Form (PDF)

Master Lock No. S31 Zenex Safety Lockout Locks


Master Lock S31 Safety Lockout Padlock: Master Lock No. S31 Locks, Lightweight Engineered Zenex Thermoplastic Padlocks with Stainless Steel Shackle for Lockout Tagout Applications. Choose Color: Green, Blue, Red, Yellow, Orange, Black, Teal, Purple or White; Keying: Keyed Different (KD), Keyed Alike (KA), Master Keyed (MK) or Keyed Alike-Master Keyed (KAMK); Choose Shackle Height: 1-1/2" (38mm) or 3-Inch (76mm)