David Bolton Bump-Resistant Cylinders for Commercial Doors: What the Attack Is, Why Standard Pins Fail, and How to Spec the Right Protection What This Article Covers and Who It Helps Cylinder bumping is a low-skill, low-cost attack that can defeat a standard pin-tumbler lock in seconds using a specially cut key and a small impact tool. If ... commercial door hardware cylinders facility security high-security hardware key control Sep 24, 2026 Our Blog
David Bolton Restricted Keyway Systems Explained: What They Are, When to Use Them, and How to Order Right What This Article Covers This guide explains what a restricted keyway system is, how it differs from a standard open keyway, and when specifying one is the right call for your facility. Whether you ar... commercial-security cylinders key-control keyways master-key-systems Sep 21, 2026 Our Blog
David Bolton Cylinder Finish Matching to Lockset: How to Get Every Opening to Look Like One Decision Was Made Why Cylinder Finish Matching Gets Overlooked Until It Is Too Late This article is for facility managers, commercial contractors, and specifiers who have ordered hardware correctly by function and keyi... commercial door hardware cylinders finish matching hardware specification mortise cylinders Sep 20, 2026 Our Blog
David Bolton Cylinder Cam Selection by Lock Manufacturer: Why the Wrong Cam Kills the Order What Is a Cylinder Cam and Why Does It Matter? A cylinder cam is the small rotating tail piece at the rear of a mortise cylinder that physically actuates the lock mechanism when the key is turned. It ... commercial-door-hardware cylinder-cams cylinders hardware-specification mortise-locks Sep 17, 2026 Our Blog
David Bolton Cylinder Service Fees on Competitor-Brand Cores: What Facilities Pay When the Masterkey System Gets Complicated Why a Simple Rekey Can Turn Into an Unexpected Invoice This article is for facility managers, commercial locksmiths, and construction project managers who oversee buildings with mixed-brand locking ha... cylinders facility maintenance interchangeable cores keying masterkey systems Sep 10, 2026 Our Blog
David Bolton Interchangeable Core Cylinders Explained: SFIC vs. LFIC and When Each Format Belongs on Your Project What This Article Covers Interchangeable core (IC) cylinders let facility teams remove and replace lock cores without tools, a screwdriver, or a locksmith on site. This guide explains how the two main... commercial locksets cylinders interchangeable core key systems rekeying Sep 10, 2026 Our Blog
David Bolton Rekeying Door Cylinders in the Field: A Practical Guide for Commercial Installers and Facility Teams What This Guide Covers -- and Who It Helps Rekeying a cylinder in the field is one of the most common service tasks in commercial door hardware maintenance -- and one of the most misunderstood. Whethe... cylinders field-maintenance interchangeable-core key-systems rekeying Sep 9, 2026 Our Blog
David Bolton Cylinder Finish Matching to a Lockset: Where the Spec Goes Wrong and How to Get It Right Why Cylinder Finish Matching Is Harder Than It Looks This article covers one of the most consistent sources of field callbacks in commercial door hardware: the cylinder finish does not match the locks... ANSI BHMA finishes commercial door hardware cylinders hardware specification lockset finishes Aug 22, 2026 Our Blog
David Bolton Drill Attacks on Door Cylinders: What Protection Options Actually Work and When to Specify Them Why Cylinder Drilling Is a Real Threat on Commercial Openings A drill attack on a pin-tumbler cylinder is one of the fastest and most common forced-entry methods on commercial and institutional doors.... UL437 commercial-door-hardware cylinder-guards cylinders high-security Aug 12, 2026 Our Blog
David Bolton Maison Keying for Apartment Buildings: What Property Managers and Specifiers Need to Get Right What Is Maison Keying? Maison keying is a specific keying arrangement used in multi-unit residential buildings where every tenant's unit key also opens the common entry doors of the building — vestibu... apartment-buildings cylinders keying master-key-systems residential-hardware Aug 3, 2026 Our Blog
David Bolton Mortise Cylinders vs Rim Cylinders: Choosing the Right Cylinder for the Lock Body You Have The Short Answer: It Depends on What the Cylinder Plugs Into This article helps contractors, facility managers, and hardware specifiers understand the practical differences between mortise cylinders a... commercial-locksets cylinders keying mortise-cylinder rim-cylinder Aug 2, 2026 Our Blog
David Bolton Construction Master Keying Procedures: How the Temporary Key System Works and When It Must Be Invalidated What Is Construction Master Keying and Who Needs to Understand It? Construction master keying is a temporary key system that gives a build team controlled access to all designated cylinders during the... construction hardware cylinders key systems keying project closeout Jul 20, 2026 Our Blog
