Master Lock Co 1KALJ Laminated Padlock Keyed Alike

Product Description

The MASTER LOCK CO 1KALJ is a laminated padlock built for general security applications where multiple locks must operate on the same key. The body measures 1.75 inches and is constructed with a laminated design for added durability and resistance to cutting and prying. The shackle extends 2.5 inches in length with a 5/16-inch diameter, giving it sufficient clearance for standard hasps, chains, and gate hardware. This padlock ships in sets of six units keyed alike, making it practical for facilities, job sites, or equipment yards where one key needs to open multiple locks.

This padlock is suited for light industrial, commercial, and residential security tasks. Typical applications include securing tool storage, job site trailers, gate chains, storage units, and locker rooms where a keyed-alike set is operationally required. The 2.5-inch shackle clearance accommodates a wide range of hasp and chain thicknesses. Each unit in the six-pack operates on the same key, reducing key management complexity across a site or crew.

Key Features

• Laminated body construction for enhanced cut and pry resistance
• 2.5-inch long shackle provides extra clearance for chains and hasps
• 5/16-inch shackle diameter for compatibility with standard hardware
• Keyed alike in sixes — all six padlocks in the set use the same key
• Compatible key blanks: Master Lock K1BOX or Ilco M1 TV 320-952
• Sold as a boxed set of six units

Compatibility

Uses Master Lock Key Blank K1BOX or Ilco Blank M1 TV 320-952. Designed as an OEM-style keyed-alike laminated padlock for standard hasp, chain, and gate security applications.

Installation Notes

Installation of this padlock requires no special tools beyond proper hasp or chain hardware sized to accept a 5/16-inch shackle diameter. Verify that the hasp staple opening is large enough to accept the shackle before installation. Keep a duplicate key secured off-site or in a key cabinet, as keyed-alike sets can be difficult to re-key in the field. Inspect the shackle and locking mechanism periodically for corrosion or wear, particularly in outdoor or high-humidity environments.

Technical Specifications

• Body Width: 1.75 inches
• Shackle Length: 2.5 inches
• Shackle Diameter: 0.3125 inches (5/16 inches)
• Keying: Keyed Alike in Sixes
• Compatible Key Blanks: Master Lock K1BOX, Ilco M1 TV 320-952
• Package Quantity: 6 per set
• Weight: 3.6 pounds (set of 6)
• Unit of Measure: EA

Standard Information

• Brand: MASTER LOCK CO
• Manufacturer Part Number: 1KALJ