Master Lock 312TRI 3PC 1-9/16″ (27mm) Laminated Padlocks with Blue Thermoplastic Shell

Master Lock 312TRI 3-Pack 1-9/16″ Laminated Padlocks with Blue Thermoplastic Shell – Keyed Alike for Outdoor Durability

The Master Lock 312TRI 3-pack of laminated padlocks delivers dependable, all-weather security ideal for outdoor storage, job boxes, and equipment protection. Each lock features a 1-9/16″ (40mm) wide laminated steel body, built for strength and resilience in high-use or outdoor environments. The 9/32″ (7mm) diameter hardened steel shackle offers strong resistance to cutting and sawing, while the dual ball bearing locking mechanism helps defend against prying and hammering attempts.

Encased in a durable blue thermoplastic shell, these locks are designed to resist moisture, dirt, and debris—making them ideal for severe weather use. Each lock in the set is keyed alike, meaning one key opens all three padlocks—convenient for work crews, facilities, or homeowners managing multiple storage points. The 4-pin cylinder also enhances resistance to picking, offering a balance of accessibility and protection.

Master Lock 312TRI 3PC 1-9/16″ (27mm) Laminated Padlocks with Blue Thermoplastic Shell Features

• Weather-Resistant Thermoplastic Shell: Protects internal components from moisture, dirt, and corrosion in harsh environments
• 1-9/16″ (40mm) Laminated Steel Body: Offers high-strength, impact-resistant security for demanding applications
• Hardened Steel Shackle (9/32″ Diameter): Resists cutting and sawing with a tough, molded cover for added protection
• Dual Ball Bearing Locking: Increases resistance to prying and forced entry
• 4-Pin Cylinder: Helps prevent lock picking and unauthorized access
• Keyed Alike Convenience: One key opens all three locks, reducing key clutter and simplifying access
• Bright Blue Shell with Matching Key Head: Easy to identify and manage in team environments or busy work areas
• Limited Lifetime Warranty: Backed by Master Lock’s trusted performance guarantee

Markets

• Construction and Trades: Secures job boxes, gang boxes, and tool storage at busy, exposed jobsites
• Self-Storage and Rentals: Ideal for individual units where durability and shared key access are essential
• Municipal and Public Works: Used to lock utility boxes, gates, and fenced access areas
• Homeowners and DIY Users: Protects sheds, fence gates, and outdoor gear from tampering and weather exposure
• Facility and Grounds Maintenance: Simplifies storage and tool security with keyed-alike locksets
• Landscaping and Mobile Crews: Locks trailer toolboxes and gates during transport or unattended use
• Retail and Equipment Rental Yards: Helps secure inventory and displays in mixed outdoor/indoor conditions

This set is a practical solution for securing outdoor sheds, jobsite gang boxes, storage lockers, and contractor toolboxes. Property maintenance teams benefit from the keyed-alike system, while landscapers and construction crews trust the weather-resistant housing in unpredictable field conditions. These locks are also suitable for self-storage, fence gates, and light-duty commercial applications.

Master Lock 312TRI 3PC 1-9/16″ (27mm) Laminated Padlocks with Blue Thermoplastic Shell Specifications

• Brand: Master Lock
• Model Number: 312TRI
• UPC: 071649093579
• Body Width: 1-9/16 in (40 mm)
• Shackle Length: 1-1/16 in (27 mm)
• Shackle Width: 5/8 in (16 mm)
• Shackle Diameter: 9/32 in (7 mm)
• Material: Laminated Steel with Thermoplastic Cover
• Color: Blue
• Lock Type: Keyed Alike (Same Key Opens All 3 Locks)
• Cylinder: 4-Pin
• Included: 3 Padlocks, Matching Keys
• Recommended Use: Outdoor Storage, Fences, Lockers, Toolboxes, Gang Boxes
• Warranty: Limited Lifetime Warranty

Master Lock 312TRI 3PC 1-9/16″ (27mm) Laminated Padlocks with Blue Thermoplastic Shell Warranty

• Master Lock’s Limited Lifetime Warranty

Why Security Professionals Choose the Master Lock 3PC 1-9/16″ (27mm) Laminated Padlocks with Blue Thermoplastic Shell

Often searched under laminated steel padlock, keyed-alike outdoor padlock set, or weatherproof storage lock, the Master Lock 312TRI set is trusted by contractors and everyday users alike. Its combination of tough build quality, weather resistance, and shared-key convenience makes it a go-to solution for secure, simplified access in both commercial and residential use cases.

Whether locking down job boxes at a construction site or securing outdoor gates at home, this set gives you lasting protection with minimal hassle—built to withstand the elements and repeated use.