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Yellow thermoplastic safety padlock with stainless steel shackle and two keys

Master Lock

Master Lock S31KAS6YLW Safety Padlock Keyed Alike Yellow

SKU CH-E9VC-KHB6J

Keyed-alike safety padlock with a yellow thermoplastic body and stainless-steel shackle for lockout procedures

  • Product typeSafety
  • Keyed-alike convenience simplifies multi-lock management
  • Thermoplastic body resists corrosion in harsh environments
  • Stainless-steel shackle withstands cutting and sawing attempts
  • Non-removable key prevents accidental unlocking during lockout
  • Compact 1 7/8 in height fits tight industrial spaces

Safety Padlock for Lockout Procedures

The Master Lock S31KAS6YLW is a yellow thermoplastic safety padlock designed for lockout and tagout applications. It features a stainless steel shackle and a non-removable key cylinder that stays locked until the key is turned. Each unit ships with two keys and warning labels to support compliant isolation procedures.

Keyed Alike Sets for Team Use

This padlock is keyed alike, so multiple locks in the same set open with the same key, simplifying key management for maintenance crews. Workers who need unique keys per lock or a master-keyed hierarchy should choose a different configuration. The lightweight thermoplastic body suits electrical panels but is not intended for high-security perimeter gates.

Compact Body Fits Tight Spaces

The 1 7/8 in body height and 11/16 in thickness allow the lock to fit on crowded breaker panels and valve handles. A 3/16 in diameter shackle with 1 1/2 in vertical clearance accommodates standard lockout hasps and chain links. Corrosion-resistant materials extend service life in damp industrial environments.

How it compares

Measured against everything we stock in Door Lock Sets & Deadbolts, at today’s prices. Recalculated every night.

Price $86.99
Pricier than about 62% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameMaster Lock
Product typeSafety

Questions about this item

What shackle clearance do I need on my hasp for the 5/8 in horizontal and 1 1/2 in vertical openings?

The padlock provides 5/8 in horizontal and 1 1/2 in vertical shackle clearance, so your hasp holes must accommodate a 3/16 in diameter shackle with at least those gaps.

Will the non-removable key stay trapped in the cylinder if I leave the 1 1/2 in stainless shackle open?

Yes, the key cannot be withdrawn while the shackle is open, preventing accidental lock-out during maintenance procedures.

How do I confirm the two included keys operate all six yellow thermoplastic bodies identically?

Insert each key into every padlock; both should turn smoothly and retract the 3/16 in stainless shackle on all six units without binding.

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