Master Lock ProSeries Brass Padlock 1177D – 10,000-Combo, Weather-Ready, 2-1/4in Wide

Overview

The Master Lock ProSeries 1177D resets the standard for rugged security in industrial settings. Its solid brass body measures 57 mm (2-1/4 in) wide, delivering a broad, sturdy footprint that helps protect hasps, latches, and storage enclosures from the elements and daily wear. The octagonal boron-carbide shackle is 28 mm tall with a 10 mm diameter and is paired with a shrouded design to add an extra layer of protection against cutting attempts. This combination of materials and form supports reliable performance in challenging environments where weather and grit are common concerns.

Key Security Features

• 10,000 possible four-digit combinations for flexible security settings
• No reset tool required, allowing quick changes on-site
• Deadlocking mechanism resists prying, shimming, and rap attacks
• Shrouded shackle and dial dust cover protect internal components
• Shackle seals help keep dust and grit out for trouble-free operation
• Solid brass body provides corrosion resistance suitable for outdoor and harsh workplaces

User Experience and Usability

• Large ergonomic dials enable operation with gloves, even in low light or complete darkness
• Clear, tactile feedback makes combination changes straightforward without specialized tools
• Built for commercial and industrial applications where dependability matters

Durability and Versatility

Weather-ready design features, including the dial dust cover and shackle seals, help the lock endure exposure to dust, moisture, and other challenging conditions. For certain variants, stainless steel shackles are available, offering additional option sets to match specific security needs. The ProSeries line emphasizes resilience without compromising ease of use, making it a practical choice for securing tools, gates, fences, and storage areas in demanding environments.

What to Expect in Practice

Customers often value the ease of programming a four-digit code, the confidence from a deadlocking mechanism, and the peace of mind that comes with a proven durability profile. While no single lock can guarantee results in every scenario, the 1177D is designed to perform consistently when faced with routine use, weather exposure, and the need for adaptable security in busy work sites.