Cal-Royal CB6 24″ Chain Bolt with Hardened Steel Construction and Zinc Chromium FinishThe Cal-Royal CB6 is a 24″ chain bolt engineered as a supplement to a regular door lock, adding an extra layer of security on cabinet, double screen, garage, and industrial doors. Constructed from hardened steel with a zinc chromium (zinc plated) finish, this surface-mounted bolt measures 6-1/4″ in product length with a 24″ chain, making it suitable for taller or wider door applications where standard bolts fall short. Ideal for commercial settings requiring dependable auxiliary locking hardware.Key FeaturesChain Length: 24″ chain paired with a 6-1/4″ product length for extended reach on tall or oversized doors.Heavy-Duty Construction: Hardened steel body with a zinc chromium (zinc plated) finish for durability and corrosion resistance.Added Security: Serves as a supplement to a regular door lock, reinforcing security on cabinet, double screen, garage, and industrial doors.Reversible Bolt Design: Can be used on doors opening inward by reversing the square bolt for flexible installation options.Automatic Bolt Throw: Equipped with a strong hard-drawn wire spring that automatically throws the bolt when the chain is released.Complete Kit: Individually poly-bagged with matching strike and mounting screws for straightforward installation.Technical SpecificationsProduct Group: Door Trim and AccessoriesProduct Subgroup: Surface BoltsProduct Type: Latch ProtectorsSubcategory: Surface, Barrel and Dutch Door BoltsCommercial/Residential: CommercialFeatures: Supplement to a Regular Door Lock for Added Security; Equipped With a Strong Hard-Drawn Wire Spring Which Throws the Bolt Automatically When Chain is ReleasedProduct Length: Chain: 24″; Product Length: 6-1/4″Product Category: Door Trim and AccessoriesDepartment: Door HardwareTypical ApplicationsCommercial Office BuildingsIndustrial and Warehouse FacilitiesGarage Doors and Utility EntrancesCabinet and Storage Door SecurityDouble Screen Door InstallationsMulti-Tenant Residential PropertiesGovernment and Municipal BuildingsWhy Cal-Royal CB6?Cal-Royal CB6 chain bolts deliver dependable auxiliary security through hardened steel construction and a durable zinc chromium finish designed for commercial-grade performance. The automatic bolt-throw spring mechanism and reversible bolt design make this a practical, professional-grade solution for reinforcing cabinet, garage, and industrial doors where added security matters most.