Adams Rite 1870-20-628 Cylinder-Operated Flush Bolt

Adams Rite 1870-20-628 Cylinder Operated Flush Bolt offers a reliable solution for securing aluminum stile doors. Engineered to prevent the accidental locking of the inactive leaf in paired doors, this flush bolt enhances both security and convenience. It features a flat face design and is available with a backset of either 31/32" or 1-1/8", ensuring versatility for various installations. The standard cylinder height measures 12" with an adjustable range of ± 1-1/4", accommodating specific door requirements. Constructed from steel with corrosion-resistant plating, the case measures 1" x 6", while the stainless steel bolt boasts a hexagonal design with a 3/8" flat to flat and a robust 11/16" throw for optimal security. The strike is designed to fit a 1/2" diameter hole in metal thresholds, with an option for wood thresholds available separately. This flush bolt is operable by any standard mortise cylinder featuring an MS® cam, making it compatible with a wide range of cylinder manufacturers. The lock mechanism comes with an attached actuator arm and includes mounting screws and installation instructions, ensuring a straightforward installation process. With a sleek matte silver finish, the Adams Rite 1870-20-628 is the ideal choice for commercial settings seeking durability and functionality.

Cylinder OpeRated Flush Bolt

Cylinder Operated Flush Bolt, Flat Face, 31/32" Backset, Aluminum Finish

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