Medeco 5471500 Indoor/Outdoor High Security 6-Pin Padlock with 7/16" Shackle Diameter and Cylinder

Medeco 5471500 Indoor/Outdoor High Security 6-Pin Padlock with 7/16" Shackle Diameter and Cylinder

The Medeco System Series Indoor/Outdoor Padlock delivers a high-security solution for demanding commercial applications where key control and physical attack resistance are paramount. Featuring a 7/16" shackle diameter and a 6-pin cylinder, this padlock is built with a boron alloy steel shackle that resists cutting attacks and provides increased tensile strength against pulling attacks — while maintaining exceptional ductility to prevent brittleness. Hardened stainless steel inserts inside the cylinder provide the ultimate defense against drilling and other forms of physical attack, and the weather-resistant body design ensures reliable performance in both indoor and outdoor environments.

Key Features

• 7/16" Shackle Diameter: Available in either a 5/16" or 7/16" shackle diameter to suit a variety of security applications and hardware configurations.
• Boron Alloy Steel Shackle: Provides exceptional resistance to cutting and pulling attacks while maintaining ductility and preventing brittleness for long-term reliability.
• Hardened Stainless Steel Cylinder Inserts: Internal hardened stainless steel inserts deliver the ultimate defense against drilling, pulling, and other forms of vandal or physical attack.
• 6-Pin High Security Cylinder: The 6-pin cylinder configuration with a unique elevating and rotating tumbler pin system is virtually pick-proof for superior security.
• Patented M4 Key Control: Medeco 4 (M4) design provides utility patent protection against unauthorized key duplication; keys may only be duplicated by Medeco or an authorized Medeco service outlet, and only upon your request. The Shuttle Pin movable element in the key also provides protection against 3D printing.
• Machined Brass Cylinder Components: All Medeco cylinders are constructed of durable machined brass components, designed to last the life of your equipment.
• Flexible Keying Options: Padlocks can be ordered keyed alike, keyed differently, or master keyed to integrate with existing door hardware systems.
• Key Retaining Options: Available as key retaining or non-key retaining; extended shackles available for Indoor/Outdoor padlock models.
• Indoor/Outdoor Weather-Resistant Design: Black lockbody finish with a weather-resistant construction suitable for a wide range of indoor and outdoor environments.

Certifications & Compliance

• Commercial-Grade Security Hardware
• Patented Medeco 4 (M4) Key Control Technology — Unauthorized Key Duplication Prevention
• Utility Patent Protection Against 3D-Printed Key Duplication

Technical Specifications

• Series: Medeco System Series Padlock
• Cylinder Technology: Medeco 4 (M4)
• Pinning: 6-Pin
• Shackle Diameter: 7/16"
• Shackle Material: Boron alloy steel (cutting and pulling resistant)
• Body Style: Indoor/Outdoor Weather-Resistant
• Certification: UL 437 Listed
• Construction: Durable machined brass cylinder components; hardened stainless-steel cylinder inserts
• Warranty: 2-year manufacturer's warranty

Typical Applications

• Commercial Office Buildings and Corporate Campuses
• Industrial and Warehouse Facilities
• Educational Institutions and School Campuses
• Healthcare Facilities and Medical Campuses
• Government and Municipal Buildings
• Outdoor Equipment and Asset Security
• High-Security Access Control and Key Management Programs

Why Medeco?

Medeco System Series padlocks are engineered for professionals who demand the highest levels of physical security and key control. With a boron alloy steel shackle rated for exceptional cutting and pulling resistance, hardened stainless steel cylinder inserts, and patented M4 key control technology that prevents unauthorized duplication — including protection against 3D-printed keys — these padlocks deliver uncompromising performance in the most demanding commercial and industrial environments. The durable machined brass cylinder construction is designed to last the life of your equipment, making Medeco a trusted choice for long-term security programs.