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Gold brass rectangular padlock with tall steel shackle

Master Lock

Master Lock Padlock KA 5-3/4 In H 4 Pin Brass

SKU CH-QV96-W2K3R

Brass padlock with 4-pin cylinder, keyed alike to number 540, and weather-resistant construction

  • Product typeBrass
  • Solid brass body resists corrosion for outdoor durability
  • 5-3/4 inch tall shackle clears thick hasps and chains
  • Four-pin cylinder with key-alike convenience uses key number 540
  • Laminated silver finish adds weather-resistant protection
  • High-security rating meets California Proposition 65 disclosure standards

Brass body with laminated finish

This Master Lock brass padlock uses a laminated body construction for strength and a silver finish. The 4-pin cylinder and Master K1 keyway provide a basic level of pick resistance. It is suited for securing gates, sheds, or storage units where keyed-alike convenience is preferred.

Keyed-alike system with registered control key

All locks in this KA series open with key number 540, allowing one key to manage multiple points. Control key registration is not required, simplifying key distribution for households or small teams. The single bumper adds a degree of protection against shackle cutting attempts.

Weather-resistant for outdoor exposure

The steel shackle and brass body resist corrosion in damp conditions, making the lock viable for year-round exterior use. High security rating indicates resistance to common forced-entry methods within its class. It is not intended for high-value assets requiring hardened shackles or advanced cylinder protection.

How it compares

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

Price $19.99
Cheaper than about 70% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameMaster Lock
Product typeBrass

Questions about this item

Will the brass body or steel shackle need lubrication or replacement over time?

The brass body resists corrosion and the hardened steel shackle withstands cutting; occasional light lubrication of the cylinder keeps the four-pin mechanism operating smoothly.

What stops the lock from being picked or shimmed during prolonged exposure?

Four spool pins in the Master K1 keyway and a laminated brass body provide pick and shim resistance that remains effective under sustained attack.

Does the brass finish discolour or the mechanism stiffen when the padlock stays outdoors all day?

Laminated brass construction and weather-resistant design prevent finish discolouration and keep the cylinder turning freely in continuous outdoor use.

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