Master Lock 178 51mm Combination Padlock Hardened Steel Shackle

The Master Lock 178 Combination Padlock offers heavy-duty, keyless security in a durable die-cast design. With a 51mm wide solid body and a hardened steel shackle, this padlock provides strong resistance to cutting, sawing, and prying—perfect for commercial and high-security needs.

Designed for convenience and control, it features a 4-digit set-your-own combination with thousands of possible code variations. A combination change key is included, allowing quick and secure resets as needed. Trusted by professionals worldwide, Master Lock delivers strength and peace of mind.

Key Benefits

• Solid Die-Cast 51mm Body: Strong and tamper-resistant
• Hardened Steel Shackle: Extra protection against cutting and sawing
• 4-Digit Resettable Combination: No keys needed, thousands of unique code possibilities
• Includes Change Key: Easily reset the combination when needed
• Built for Commercial Security: Ideal for job sites, gates, lockers, storage units, and more
• Master Lock Limited Lifetime Warranty: Trusted reliability

Specifications

• Item Code: 0178
• Body Width: 51mm
• Shackle Diameter: 8mm
• Shackle Height: 25mm
• Lock Type: 4-digit combination
• Shackle Material: Hardened steel
• Body Material: Die-cast metal
• Includes: Combination reset/change key
• Weight per Unit: 0.32kg
• Pack Quantity: 1 padlock

Ideal For

• Commercial and industrial use
• Lockers and toolboxes
• Outdoor gates and fences
• Storage units and sheds
• Worksites needing high-security, keyless access

Why Choose the Master Lock 178?

The Master Lock 178 padlock offers the perfect balance of strength, ease-of-use, and adaptability. With no keys to lose and a combination that can be reset as needed, it’s the smart, secure choice for both personal and commercial applications.