BEST 7KC Series Passage Function Grade 2 Medium Duty Cylindrical Lever LockProfessional Medium Duty Cylindrical Lock SolutionThe BEST 7KC Series cylindrical lever lock delivers Grade 2 performance with strength exceeding ANSI requirements for moderate traffic applications. This passage function lock features a 2 3/8" to 3 3/4" backset range, 1/2" throw deadlocking latch, and fits standard 2 1/8" diameter door preparation for doors 1 3/8" to 2" thick. UL listed for 3-hour fire rating and BHMA Grade 2 certified for reliable commercial performance.Professional Features & BenefitsFlexible Backset Options: Available in 2 3/8", 2 3/4", 3 3/4", and 5" backsets to accommodate various door configurations and installation requirements.Grade 2 Durability: Exceeds ANSI Grade 2 requirements with corrosion-treated internal steel mechanisms for long-term reliability in moderate traffic applications.Standard Door Preparation: Fits common 2 1/8" diameter bore for lock housing and 1" diameter for latch tube, simplifying installation on existing door preparations.Through-Bolt Mounting: Through-bolt mounting studs provide increased torque resistance and enhanced security against forced entry attempts.Interchangeable Core System: Quick rekeying capability with BEST interchangeable core featuring solid brass, pin-tumbler construction with 7-pin core for flexible key management.ADA Compliant Design: Meets ANSI A117.1 section 404.2.6 and Illinois Accessibility Standard requirements for accessible door hardware operation.Fire Rating Certification: UL listed for use on 3-hour, A label single doors up to 4 x 8 for code compliance in fire-rated applications.Reversible Operation: Lockset reversible for either hand of door without removing keyed lever, providing installation flexibility.Technical SpecificationsCommercial/Residential: CommercialDepartment: Door HardwareDoor Hand Direction: Non-HandedDuty Level: Medium DutyElectronic: NoGrade: Grade 2Handle Type: LeverKeyed: YesKeyed Function: Non-KeyedProduct Attribute: Cylindrical LocksProduct Category: Mechanical LocksProduct Function: Passage/Hall/ClosetProduct Group: Mechanical LocksProduct Subgroup: Bored LocksetsProduct Substrate: Corrosion-Treated MetalsProduct Type: LeversetsSeries: 7KC SeriesSubcategory: Bored LocksetsInstallation & OperationReview manufacturer specifications and verify door preparation requirements including door thickness (1 3/8" to 2"), 2 1/8" diameter bore, and 1" latch tube diameter.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 using through-bolt mounting studs.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 ApplicationsCommercial Office BuildingsEducational FacilitiesHealthcare InstitutionsRetail EstablishmentsIndustrial and Warehouse FacilitiesMulti-Tenant Residential PropertiesGovernment and Municipal BuildingsWhy Choose BEST Quality?BEST 7KC Series cylindrical locks deliver professional-grade reliability with corrosion-treated internal steel mechanisms and strength exceeding ANSI Grade 2 requirements. UL listed for 3-hour fire rating and BHMA certified for demanding commercial applications. Engineered with through-bolt mounting and interchangeable core technology where dependable performance and flexible key management are essential.