Cal-Royal NM8440 Heavy Duty Grade 1 Privacy Mortise Lockset with DeadboltThe Cal-Royal NM8440 is a Heavy Duty Grade 1 Privacy with Deadbolt mortise lockset designed for doors 1-3/4" thick with a 2-3/4" backset. The latch bolt retracts by knob or lever from either side, while the deadbolt is thrown or retracted by the inside thumbturn; throwing the deadbolt locks the outside knob or lever, and rotating the inside knob or lever simultaneously retracts both the deadbolt and latch bolt for immediate egress. Built with a heavy gauge zinc chromate steel lockcase and an 8" x 1-1/4" x 3/32" heavy gauge steel front, this lockset is UL Listed "A" Label (3 hours) for fire door applications and meets ANSI/BHMA A156.13, Series 1000, Grade 1 standards, exceeding 1,000,000 cycles.Key FeaturesDoor & Backset Specifications: Designed for doors 1-3/4" thick with a 2-3/4" backset for standard commercial door preparation.Heavy-Duty Durability: Meets ANSI/BHMA A156.13, Series 1000, Operational & Security Grade 1 standards and exceeds 1,000,000 cycles for long-term reliability in high-traffic applications.Heavy-Duty Construction: Heavy gauge zinc chromate steel lockcase with an 8" x 1-1/4" x 3/32" heavy gauge steel front that accommodates flat doors and doors beveled 1/8" in 2".Deadbolt & Latchbolt: 1" throw brass, chrome-plated deadbolt with hardened steel rollers and anti-saw hardened pins, paired with a brass, chrome-plated latchbolt featuring anti-friction design.Armored Front: Wrought brass armored front attached by machine screws conceals lock mounting screws for added security.Guardbolt & Stopworks: Extruded brass, chrome-plated guardbolt and rocker-type brass, chrome-plated stopworks for smooth, secure operation.Strike Plate: Brass, non-handed curved strike measuring 4-7/8" x 1-1/4", with a curved-up strike available upon request.Field-Reversible Handing: Handed design that is easily field-reversible to accommodate either door swing.Escutcheon Dimension: 2 1/2" W x 8 1/4" H x 1/2" T for a clean, low-profile trim appearance.Certifications & ComplianceUL Listed "A" Label (3 hours) for use on fire doors, single or pair, with "F" mark stamped on strikeMeets ANSI/BHMA A156.13, Series 1000, Operational & Security Grade 1 Standards; lock body conforms to Federal Specification Type 86, exceeding 1,000,000 cyclesConforms and meets ADA (American Disability Act) RegulationsBHMA Certified Lifetime WarrantyTechnical SpecificationsProduct Group: Mechanical LocksANSI/BHMA: Meets ANSI/BHMA A156.13, Series 1000, Operational & Security Grade 1 Standards Lock body conforms to Federal Specification Type 86, and all dimensional and operational performances, Exceeds 1,000,000 cyclesProduct Subgroup: Mortise Locks and TrimProduct Type: Mortise LocksSubcategory: Mortise LocksetLatch Throw: 1" (deadbolt)Commercial/Residential: CommercialCylinder and Keyways: 6-Pin solid brass "C" Keyway StandardLock Type: MortiseLock Function: Privacy/Bed/BathKeyed: NoProduct Attribute: Mortise LocksElectronic: NoProduct Function: Privacy/Bed/BathDoor Hand Direction: Field ReversibleProduct Category: Mechanical LocksDepartment: Door HardwareTypical ApplicationsCommercial Office BuildingsEducational FacilitiesHealthcare InstitutionsRetail EstablishmentsMulti-Tenant Residential PropertiesGovernment and Municipal BuildingsBedroom and Bathroom Doors Requiring Privacy FunctionWhy Cal-Royal NM8440?Cal-Royal NM8440 mortise locksets deliver professional-grade reliability with a heavy gauge zinc chromate steel lockcase, brass chrome-plated deadbolt and latchbolt components, and a design tested to exceed 1,000,000 cycles. Engineered for demanding commercial applications where dependable privacy function, fire-rated performance, and ADA compliance are essential.