Master Lock 4120 Keyed Padlock


Master Lock Brass Keyed Padlock 4120

  • Case hardened shackle resists sawing and filing
  • Brass body and cylinder provide extra resistance to the elements
  • Pin tumbler cylinder provides greater pick resistance
  • 3/4in wide (19mm) wide brass body provides resistance to the elements
  • 7/16in (11mm) tall, 5/32in (4mm) hardened steel shackle
  • Non-rekeyable, 3-pin tumbler cylinder provides pick resistance



The No. 4120 Keyed Different from Master Lock is an economy solid brass lock with a 5/32″ (4mm) wide body and 7/16″ (11mm) tall hardened steel shackle. The 4120 features a non-rekeyable, 3-pin tumbler cylinder which offers strong pick resistance.


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Carrier: UPS/FedEx/USPS. Delivery Timescale: More than 90% of orders arrive in 10 business days after despatch.

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The following conditions must be met:

1. Items must be returned within 30 days after the purchase date.
2. Items must be unworn, undamaged and in original packaging.

Master Lock 4120 Keyed Padlock