Master Lock 4680DNKL Resettable Combination Lock Nickel Steel

The Master Lock 4680DNKL delivers reliable security with user-controlled combination settings that eliminate the need for keys. This resettable combination lock features a hardened steel shackle and weather-resistant nickel finish that maintains performance in harsh outdoor conditions.

What Makes This Different

Unlike fixed-combination locks, the 4680DNKL allows users to set their own 4-digit combination and reset it whenever needed. The nickel-plated steel construction resists corrosion better than standard zinc locks, while the precision tumbler mechanism provides smooth operation even after extended exposure to moisture and temperature fluctuations. The 2-inch wide body offers enhanced security compared to smaller padlocks.

Key Features

• User-resettable 4-digit combination with 10,000 possible combinations
• Hardened steel shackle with 9/32-inch diameter for cut resistance
• Nickel-plated steel body measures 2 inches wide for maximum security
• Weather-resistant design withstands rain, snow, and temperature extremes
• Dual ball bearing locking mechanism prevents shackle manipulation
• No-key design eliminates lockout situations from lost keys
• Precision-machined tumblers ensure reliable combination recognition

Field testing demonstrates consistent performance across temperature ranges from -20°F to 160°F. The lock maintains smooth operation after 1,000+ open/close cycles, making it suitable for high-traffic applications like storage units, gates, and equipment securing. The corrosion-resistant finish shows minimal wear after 12 months of outdoor exposure in salt-air environments.

Technical Specs

• Body dimensions: 2" W x 2.25" H x 0.75" D
• Shackle: 9/32" diameter hardened steel, 1" clearance
• Weight: 8.2 ounces
• Material: Nickel-plated steel body and shackle
• Combination: 4-digit resettable (0000-9999)
• Security rating: Suitable for medium-security applications
• Operating temperature: -20°F to 160°F
• Country of origin: China

Professional locksmiths recommend this model for applications requiring frequent access by multiple users without key distribution concerns. The combination reset feature allows security updates without replacing hardware, reducing long-term costs while maintaining access control.