Cal-Royal MB85R 6" Brass Security Surface Bolt, Round End, 1" ThrowThe Cal-Royal MB85R is a 6" brass security surface bolt engineered for superior strength and smooth, reliable operation on commercial doors. Featuring a round end design with a 1" throw, this surface bolt has a body size of 3/4" x 6" x 1-1/4" and a bolt diameter of 1/2", making it a durable choice for door trim and security accessory applications. Rated BHMA L04151, the MB85R includes a matching strike and fastener for complete installation, with architectural finishes available to match surrounding hardware.Key FeaturesBody Size: 3/4" x 6" x 1-1/4" for a robust, commercial-grade surface bolt profile.Bolt Diameter: 1/2" solid bolt construction for reliable engagement and security.1" Throw: Provides secure bolt projection for dependable locking performance.Round End Design: Clean, finished appearance suited to a variety of door styles.Strike Dimension: 15/16" x 1-15/16" matching strike included with fastener for a complete, ready-to-install set.Deep Cup Finger Hole with Double Action Spring: Combine to assure ease of operation and automatic holding of the bolt in either the projected or retracted position.Superior Strength and Smooth Operation: Designed for reliable, long-term performance in commercial door applications.Architectural Finishes Available: Allows the bolt to be matched to surrounding door hardware finishes.Certifications & ComplianceBHMA L04151Technical SpecificationsProduct Group: Door Trim and AccessoriesProduct Subgroup: Surface BoltsProduct Type: Flush BoltsSubcategory: Flush BoltsCommercial/Residential: CommercialBody Size: 3/4" x 6" x 1-1/4"Bolt Diameter: 1/2"Product Model: MB85RStrike Dimension: 15/16" x 1-15/16"Product Category: Door Trim and AccessoriesDepartment: Door HardwareTypical ApplicationsCommercial Office BuildingsEducational FacilitiesHealthcare InstitutionsRetail EstablishmentsIndustrial and Warehouse FacilitiesMulti-Tenant Residential PropertiesGovernment and Municipal BuildingsWhy Cal-Royal MB85R?Cal-Royal MB85R surface bolts are built with a solid brass construction, a deep cup finger hole, and double action spring for dependable, smooth operation in commercial door applications. Backed by a BHMA L04151 rating, this bolt is engineered to deliver secure holding in both the projected and retracted positions where dependable performance is essential.