Adams Rite 1875-603-IB Two-Point Deadlock

Adams Rite 1875-603-IB Two Point Deadlock is engineered for superior security in aluminum stile doors, combining robust construction with user-friendly operation. This two-point deadlock features a corrosion-resistant zinc-plated steel case that measures 1" x 6", ensuring durability and longevity in commercial settings. Designed to prevent accidental locking of the inactive leaf of paired doors, this lock is ideal for high-traffic areas where reliability is paramount. The cylinder backset is available in 31/32" or 1-1/8", while the standard cylinder height is 12" with an adjustable range of ± 1-1/4". The stainless steel hexagonal bolt, with a 3/8" flat to flat dimension and a generous 11/16" throw, guarantees dependable locking performance. Installation is straightforward, thanks to the included actuator arm, stainless steel bolt guide, and mounting screws. The 1/2" diameter strike fits metal thresholds, and a compatible strike for wood thresholds (model 4005) is available separately. Adams Rite ensures that their locks are compatible with standard mortise cylinders featuring MS® cams, allowing flexibility in keying options. With a shipping weight of just 1-1/4 lbs, this lock offers both practicality and peace of mind for commercial applications.

Two Point Deadlock

Two Point Deadlock, Zinc Plated

The 1870 Cylinder-Operated Flushbolt is designed for aluminum stile doors.

Prevents accidental locking of the inactive leaf of paired doors.

• Cylinder Backset: 31/32” or 1-1/8” only
• Cylinder Height: Standard length (cylinder center to retracted bolt tip) is 12” with ± 1-1/4” adjustment. Other lengths available by special order.
• Case: Measures 1” x 6” x depth.  Depth varies by backset (see table on catalog page). Steel with corrosion-resistant plating.
• Bolt: Hexagonal 3/8” flat to flat, with 11/16” throw. Made of stainless steel.
• Strike: 1/2” diameter hole in metal threshold or header is suitable. For wood thresholds, 4005 strike is available separately.
• Faceplate: Measures 1" x 6-7/8".
• Cylinder Cam: Operable by any standard mortise cylinder with MS® cam, dimensioned as shown. Cylinders with MS® cams can be readily obtained from most cylinder manufacturers. See CYLINDERS for cylinder make, thumbturn and trim ring information.
• Standard Package: Basic lock mechanism boxed with actuator arm attached, rod/bolt assembly unattached. Stainless steel bolt guide, mounting screws, and installation instructions included. Cylinders available separately. Shipping weight: 1-1/4 lbs.

Resources

• 1870 Cylinder-Operated Flushbolt Installation Instructions
• 1870HM Series Cylinder Operated Flushbolt Installation Instructions
• 1877 Cylinder-Operated Flushbolt for Wood Doors Installation Instructions
• B1921, B1923 Full Surface Reinvorcing Pivot Hinges Installation Instructions
• Flushbolts and Pivots Cut Sheet
• MS1880, MS1881 Two-Point Flushbolt Installation Instructions