Medeco 5400 Indoor/Outdoor High Security Padlock with 5/16" Boron Alloy Steel Shackle SFIC

Medeco 5400 Indoor/Outdoor High Security Padlock with 5/16" Boron Alloy Steel Shackle SFIC

The Medeco System Series 5400 Indoor/Outdoor Padlock delivers a high-security locking solution engineered for demanding commercial applications where key control and physical attack resistance are paramount. Featuring a boron alloy steel shackle available in 5/16" or 7/16" diameter, this padlock resists cutting and pulling attacks while maintaining exceptional ductility to prevent brittleness. The weather-resistant indoor/outdoor body design, combined with hardened stainless steel cylinder inserts and the patented Medeco 4 (M4) elevating and rotating tumbler pin system, provides comprehensive protection against drilling, picking, and unauthorized key duplication. Extended shackle options are available for indoor/outdoor models, and the lock can be ordered as key retaining or non-key retaining to suit specific operational requirements.

Key Features

• Boron Alloy Steel Shackle: Available in 5/16" or 7/16" diameter, the boron alloy steel shackle provides superior resistance to cutting and pulling attacks while maintaining exceptional ductility — eliminating brittleness for long-term reliability.
• Hardened Stainless Steel Cylinder Inserts: Internal hardened stainless steel inserts deliver the ultimate defense against drilling and other forms of physical vandal attack, protecting cylinder integrity under extreme force.
• Patented Medeco 4 (M4) Key Control: The M4 design provides utility patent protection against unauthorized key duplication. Keys may only be duplicated by Medeco or an authorized Medeco service outlet at the owner's request, maintaining strict system integrity.
• Shuttle Pin Anti-3D-Print Technology: The Shuttle Pin movable element integrated into the M4 key provides active protection against 3D-printed key duplication attempts.
• Virtually Pick-Proof Cylinder: The unique elevating and rotating tumbler pin system makes the cylinder virtually pick-proof, providing an advanced level of security beyond standard pin tumbler designs.
• Durable Machined Brass Cylinder Components: All Medeco cylinders are constructed of durable machined brass, engineered to last the life of the equipment in continuous commercial use.
• Flexible Keying Options: Padlocks can be ordered keyed alike, keyed differently, or master keyed to integrate seamlessly with existing door hardware systems and key management programs.
• Key Retaining & Extended Shackle Options: Available as key retaining or non-key retaining; extended shackle lengths are available for indoor/outdoor models to accommodate a variety of hasp and chain configurations.
• Intelligent Key Electronic Cylinder Compatibility: System Series padlocks can be ordered with Medeco 4 High Security or a variety of cylinder technologies including Intelligent Key electronic cylinders for advanced access control integration.

Certifications & Compliance

• Commercial-Grade Security Hardware
• Patented Medeco 4 (M4) Key Control — Utility Patent Protection Against Unauthorized Duplication
• Patented Key Programs Maintain System Integrity

Technical Specifications

• Series: Medeco System Series Padlock
• Cylinder Technology: Medeco 4 (M4)
• Pinning: 6-Pin
• Shackle Diameter: 5/16"
• 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 Campus Facilities
• Industrial and Warehouse Facilities Requiring High-Security Access Control
• Educational Institutions with Key Control Requirements
• Healthcare Facilities Securing Sensitive Areas and Equipment
• Government and Municipal Buildings
• Outdoor Infrastructure, Gates, and Equipment Enclosures
• Multi-Tenant Properties with Master Key System Integration

Why Medeco?

Medeco System Series padlocks are engineered from durable machined brass cylinder components and boron alloy steel shackles, combining physical attack resistance with patented key control technology that prevents unauthorized duplication at every level. The M4 Shuttle Pin design and hardened stainless steel cylinder inserts make these padlocks a professional-grade choice for any application where security and key management integrity cannot be compromised.