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Silver laminated steel padlock, 16 mm shackle, keyed alike 831

Master Lock

Master Lock 7KALJ-P831 Keyed Padlock Alike Key No 831

SKU CH-P8YM-5C01F

A 4-pin steel padlock keyed alike to number 831 for consistent lockout or security access

  • Keyed alike to P831 for single-key convenience across multiple locks
  • Four-pin cylinder provides standard pick resistance for everyday security
  • Laminated steel body resists physical attacks and harsh handling
  • 9/16 inch shackle clearance fits common hasps and lockout points
  • Silver finish identifies lockout devices at a glance

Steel padlock keyed alike P831

The Master Lock 7KALJ-P831 is a laminated steel padlock keyed to the same P831 code so multiple units open with one key. It suits lockout-tagout procedures, tool cribs and general security where identical keying simplifies key management. The four-pin cylinder and 16 mm shackle diameter provide basic physical resistance for indoor or sheltered outdoor points. Buyers who need unique keys per lock or a weather-rated shroud should choose a different model.

Laminated body and steel shackle resist casual

The 1-1/8 in wide laminated steel body and 3/16 in diameter hardened steel shackle withstand light cutting and prying attempts typical of low-risk zones. No weather-resistant coating is applied, so exposure to rain or salt spray will accelerate surface corrosion. The single bumper reduces rattle but offers no sealing against moisture or dust ingress. Power draw and noise are not applicable to this passive mechanical device.

Sustained load limited by four-pin cylinder

Under prolonged attack the four-pin K7 keyway can be picked or raked more quickly than higher-pin or restricted-keyway designs. The 9/16 in shackle clearance allows bolt-cutter jaws to engage fully, so the lock yields to sustained leverage or cutting force. It remains functional through repeated daily locking cycles but is not rated for high-security or extended outdoor duty. Users needing drill resistance or shrouded shackles must specify a different product.

Highlights

  • Keyed alike to P831 for single-key convenience across multiple locks
  • Four-pin cylinder provides standard pick resistance for everyday security
  • Laminated steel body resists physical attacks and harsh handling
  • 9/16 inch shackle clearance fits common hasps and lockout points
  • Silver finish identifies lockout devices at a glance

Specifications

BrandMASTER LOCK

Questions about this item

How do I install this 1-1/8 in wide laminated steel padlock and what step is often missed?

Insert the 3/16 in diameter steel shackle through the hasp or chain, push down until the locking mechanism engages with an audible click, then remove the key; the step often missed is verifying the shackle is fully seated by pulling up firmly before walking away.

What maintenance or replacement will this 4-pin Master K7 keyway padlock need over time?

Apply a light PTFE or graphite lubricant into the keyway and shackle holes every few months to prevent corrosion and sticking; if the key begins to bind or the shackle fails to latch, replace the entire padlock as the core is not interchangeable.

What is the first limit that appears when this weather-resistant rated No padlock sees sustained outdoor use?

The laminated steel body and steel shackle will develop surface rust first, which can seize the 4-pin cylinder and shackle mechanism, because the product is explicitly not weather resistant.

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