Master Lock 5KALJ-A445 Laminated Steel Padlock Keyed Alike

Product Description

The MASTER LOCK 5KALJ-A445 is a commercial-grade laminated steel padlock designed for industrial and heavy-duty security applications. The 2-inch wide laminated steel body delivers superior resistance to physical attack, while the 2.5-inch tall, 0.375-inch diameter hardened boron alloy shackle provides strong cut resistance. A dual ball bearing locking mechanism resists prying, and the non-rekeyable 4-pin W1 cylinder is engineered to resist picking. This padlock is ordered as a keyed-alike unit, meaning multiple locks operate with the same key — a practical setup for facilities, job sites, and equipment yards where one key needs to open several locks.

This padlock suits industrial, commercial, and trade applications where consistent, reliable access control is required across multiple lock points. Keyed-alike configurations are common in electrical panel rooms, mechanical rooms, storage cages, gate hasps, and equipment lockout-tagout programs. Any facility or service professional managing multiple secured access points benefits from the keyed-alike W1 cylinder arrangement. Additional locks keyed to the W1 cylinder can be ordered to expand coverage across a site without adding keys to a ring.

Key Features

• 2-inch wide reinforced laminated steel body for extra structural strength
• Hardened boron alloy shackle — 2.5 inches tall, 0.375 inches in diameter — for cut resistance
• Dual ball bearing locking mechanism maximizes pry resistance
• Non-rekeyable 4-pin W1 cylinder resists picking attempts
• Keyed alike — multiple units open with one key; compatible with other W1 cylinder locks
• Commercial-grade construction rated for industrial environments

Compatibility

Keyed alike to the W1 cylinder; additional locks ordered with the W1 cylinder designation will operate on the same key. Designed as an OEM-equivalent replacement or expansion lock for facilities using the W1 keying system.

Installation Notes

Installation requires no tools — insert the shackle into the lock body and engage the locking mechanism. For lockout-tagout (LOTO) applications, verify compliance with OSHA 29 CFR 1910.147 before deploying. Inspect the hasp, staple, or latch hardware for adequate clearance to accept the 0.375-inch diameter shackle before purchase. Do not force the shackle; if resistance is felt during operation, inspect the lock body and shackle for debris or damage.

Technical Specifications

• Body Material: Laminated Steel
• Body Width: 2 inches
• Shackle Height: 2.5 inches
• Shackle Diameter: 0.375 inches
• Shackle Material: Hardened Boron Alloy Steel
• Locking Mechanism: Dual Ball Bearing
• Cylinder Type: 4-Pin W1, Non-Rekeyable
• Keying: Keyed Alike
• Weight: 0.83 pounds
• Unit of Measure: Each

Standard Information

• Brand: MASTER LOCK
• Manufacturer Part Number: 5KALJ-A445