Master Lock 3KALH-0851 Laminated Steel Padlock Keyed Alike

Product Description

The MASTER LOCK 3KALH-0851 is a commercial-grade laminated steel padlock designed for industrial and heavy-duty applications. The lock body measures 1-9/16 inches wide and is constructed from reinforced laminated steel for superior strength and drilling resistance. A hardened steel shackle stands 2 inches tall with a 9/32-inch diameter, providing excellent cut resistance. Dual ball bearing locking delivers maximum pry resistance. The non-rekeyable 4-pin W1 cylinder is engineered to resist picking. Licensed security technicians and facilities maintenance professionals commonly specify this lock for gates, storage units, equipment enclosures, and access control points.

The 3KALH-0851 is configured as a keyed-alike padlock, meaning multiple units ordered with the same W1 cylinder designation will operate on a single key. This makes it well suited for facilities managers, contractors, and industrial operations that need consistent keying across multiple lock points without the cost of a master-key system. It is appropriate for both indoor and outdoor use where a durable, tamper-resistant padlock is required.

Key Features

• 1-9/16-inch wide reinforced laminated steel body resists drilling and physical attack
• 2-inch tall, 9/32-inch diameter hardened steel shackle for superior cut resistance
• Dual ball bearing locking mechanism maximizes pry resistance
• Non-rekeyable 4-pin W1 cylinder designed to resist picking
• Keyed alike configuration allows multiple locks to operate on one key
• Commercial-grade construction suited for industrial and facilities applications

Compatibility

Keyed alike with other locks sharing the W1 cylinder designation, allowing matched keying across multiple units ordered to the same specification.

Installation Notes

Installation requires no special tools beyond proper hasp or latch hardware rated for the shackle diameter. Before securing any energized enclosure or panel, follow applicable lockout/tagout (LOTO) procedures in accordance with OSHA 29 CFR 1910.147. Verify the hasp or anchor point is rated for the load and environment before placing the lock in service. Do not force the shackle into an undersized hasp, as this can damage the locking mechanism.

Technical Specifications

• Body Material: Laminated Steel
• Body Width: 1-9/16 inches (40mm)
• Shackle Height: 2 inches (51mm)
• Shackle Diameter: 9/32 inches (7mm)
• Shackle Material: Hardened Steel
• Cylinder Type: 4-Pin W1, Non-Rekeyable
• Locking Mechanism: Dual Ball Bearing
• Keying: Keyed Alike
• Weight: 1 pound
• Unit of Measure: Each

Standard Information

• Brand: MASTER LOCK
• Manufacturer Part Number: 3KALH-0851