Hager RCBB1542 Full Mortise Ball Bearing Hinge with 5/8″ Round Corners – Stainless Steel 5-Knuckle DesignProfessional Residential Door Hardware SolutionThe Hager RCBB1542 full mortise ball bearing hinge delivers reliable residential door operation with premium stainless steel construction and precision ball bearing technology. Available in 3-1/2″ x 3-1/2″ and 4″ x 4″ sizes, this 5-knuckle hinge features 5/8″ round corners and .085″ gauge construction for smooth, long-lasting performance. ANSI A5114 certified with reversible design and removable pin for versatile installation applications.Professional Features & BenefitsSize Options: Available in 3-1/2″ x 3-1/2″ and 4″ x 4″ configurations to accommodate various residential door applications.Round Corner Design: 5/8″ (16 mm) radius round corners provide clean installation appearance and reduce stress concentration points.Ball Bearing Operation: Precision ball bearing technology ensures smooth door operation and extended service life in residential applications.Heavy-Duty Construction: .085″ gauge stainless steel with stainless steel pin provides exceptional corrosion resistance and durability.Reversible Configuration: Field-reversible design allows adaptation to left-hand or right-hand door installations without additional hardware.Removable Pin Design: .234″ diameter removable pin facilitates door removal for maintenance or replacement without disturbing frame installation.Complete Installation Package: Includes 3/4″ x 9″ flathead fasteners for immediate installation readiness.ANSI Certification: ANSI A5114 compliance ensures consistent quality and performance standards for residential applications.Reversible. Round corners – 5/8 (16 mm) radius. Removable pin.Technical SpecificationsANSI/BHMA: ANSI A5114Bearing Type: Ball BearingBox Quantity: 2 eachCase Quantity: 3-1/2″ – 100 each. 4″ – 50 each.Certifications: ANSI A5114Commercial/Residential: ResidentialFastener Size – Wood: 3/4″ x 9″ FHFasteners: 3/4″ x 9″ FHFeatures: Reversible. Round corners – 5/8″ (16 mm) radius. Removable pin.Finishes: US32DGauge: .085″Knuckles: 5Material: Stainless steel with stainless steel pinNotesSubcategory: Full Mortise HingesInstallation & OperationReview manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces.Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.Professional ApplicationsResidential Entry DoorsInterior Passage DoorsMulti-Family Housing UnitsApartment and Condominium BuildingsSingle-Family Home ConstructionResidential Renovation ProjectsCustom Home ApplicationsWhy Choose Hager Quality?Hager residential hinges deliver professional-grade reliability with stainless steel construction and precision ball bearing technology rated to ANSI A5114 standards. The .085″ gauge construction and corrosion-resistant materials ensure dependable performance in demanding residential applications. Engineered for smooth operation and long-term durability where consistent door function is essential.