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Solid brass rectangular padlock with long boron shackle

Master Lock

Master Lock Pro Series Solid Body Padlock 1-1/2 In. H

SKU CH-6G2X-K59XT

Solid brass padlock with boron shackle, six-pin SFIC core and weather resistance

  • TypePro Series
  • Pro Series security with 6-pin cylinder
  • Boron shackle resists cutting and sawing
  • Brass body withstands outdoor corrosion
  • Long shackle fits thick chains and hasps
  • Rekeyable SFIC core matches existing key systems

Pro Series Brass Padlock

The Master Lock Pro Series padlock uses a solid brass body and a boron-alloy shackle for high-security applications. Its interchangeable SFIC core accepts OEM cylinders so the lock can be keyed into existing master-key systems. Six-pin construction and rekeyable design suit commercial doors, gates and storage units that demand controlled access.

Verify shackle clearance and keyway

Measure the hasp or chain link to confirm the 1-1/2 inch shackle height and 29/32 inch shackle width will pass through without binding. Ensure the current cylinder uses an SFIC-compatible keyway or plan to install a new OEM core, as the lock ships without a pre-installed cylinder.

Fits master-key systems and outdoor exposure

The brass body resists corrosion while the boron shackle resists cutting, making the padlock suitable for weather-exposed sites. Interchangeable core design frees facility managers from replacing the entire lock when keys are lost — only the core needs swapping. Rectangular body profile sits flush against flat mounting surfaces.

Highlights

  • Pro Series security with 6-pin cylinder
  • Boron shackle resists cutting and sawing
  • Brass body withstands outdoor corrosion
  • Long shackle fits thick chains and hasps
  • Rekeyable SFIC core matches existing key systems

Specifications

BrandMaster Lock
TypePro Series

Questions about this item

What comes in the box with this Master Lock Pro Series padlock and do I need to buy a cylinder separately?

The padlock includes the solid brass body and boron alloy shackle. It accepts any OEM SFIC core, so you must supply or purchase a compatible interchangeable core separately.

Which shackle size should I choose for this model?

This unit has a fixed long shackle measuring 3/8 in. diameter, 1 1/2 in. height and 29/32 in. width; no alternative shackle options are offered for this SKU.

What does the 6-pin SFIC compatibility mean for everyday security?

It means the lock works with any standard 6-pin small-format interchangeable core, letting you match existing key systems and rekey quickly without replacing the whole padlock.

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