Master Lock 5KALJ-A383 Laminated Steel Padlock Keyed Alike

Product Description

The MASTER LOCK 5KALJ-A383 is a heavy-duty laminated steel padlock designed for commercial and industrial security applications. The 2-inch wide reinforced laminated steel body delivers extra resistance to forced entry, while the 2.5-inch tall, 0.375-inch diameter hardened boron alloy shackle provides strong cut resistance. A non-rekeyable 4-pin W1 cylinder helps resist picking attempts, and dual ball bearing locking bolts add maximum pry resistance. This padlock is keyed alike to the A383 key series, meaning multiple locks in this series open with the same key. Licensed tradespeople and facilities maintenance professionals use this lock for securing gates, equipment, storage units, and access panels in demanding environments.

This padlock is suited for industrial facilities, commercial job sites, utility enclosures, and fleet maintenance operations where consistent key control across multiple locks is required. The keyed alike configuration allows a single key to operate several padlocks throughout a facility, reducing key management complexity. The W1 cylinder is compatible with other Master Lock products using the same cylinder designation, allowing further keyed alike expansion within a keyed system. The laminated steel construction holds up well in outdoor and semi-outdoor conditions where exposure and forced-entry risk are both concerns.

Key Features

• Keyed alike A383 series — multiple locks open with one key, or match other locks with the W1 cylinder
• 2-inch wide reinforced laminated steel body for superior strength against impact and forced entry
• 2.5-inch tall, 0.375-inch diameter hardened boron alloy shackle for excellent cut resistance
• Dual ball bearing locking mechanism for maximum pry resistance
• Non-rekeyable 4-pin W1 cylinder designed to resist picking
• Commercial boxed packaging — sold per unit, minimum order quantity of 24

Compatibility

Keyed alike to the A383 key series. Compatible for keyed alike pairing with other Master Lock products using the W1 cylinder designation. Designed for commercial and industrial security applications requiring consistent key control across multiple lock points.

Installation Notes

Installation requires no special tools — insert the shackle through the hasp or staple and allow the locking mechanism to engage fully before applying load. Before securing any electrical enclosure or utility access point, confirm power is isolated and all applicable local codes are observed. Do not force the shackle or attempt to rekey this cylinder, as the W1 cylinder is a non-rekeyable design. Inspect the shackle and body for wear or corrosion periodically, particularly in outdoor or high-humidity environments.

Technical Specifications

• Body Width: 2 inches
• Shackle Height: 2.5 inches
• Shackle Diameter: 0.375 inches
• Shackle Material: Hardened boron alloy steel
• Body Material: Laminated steel
• Cylinder Type: 4-pin W1, non-rekeyable
• Locking Mechanism: Dual ball bearing
• Key Series: A383 (Keyed Alike)
• Body Color: Gray
• Weight: 0.83 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 24

Standard Information

• Brand: MASTER LOCK
• Manufacturer Part Number: 5KALJ-A383