Designed for use instead of conventional flip-lever operated flushbolts, the 1870HM gives building management key control of the inactive leaf of paired doors. Prevents casual locking of the inactive leaf by children or other unauthorized persons. Uses same basic overcenter action mechanisms as MS pivoted bolt locks. Recommended for installation at both top and bottom of inactive door with MS1850SN in active door for gretest security.

• Cylinder Backset: 1-1/4" only
• Cylinder Height:
• Standard length (cylinder center to door end) is 13-1/2".
• Other lengths available on special order.
• Bolt:
• Hexagonal 3/8" flat to flat, with 11/16" throw.
• Made of stainless steel.
• Case: Steel with corrosion-resistant plating. 1" x 6" x 1-29/32".
• Strike: 2-1/4" x 15/16" strike is supplied.
• Operation:
• 360 turn of key throws or retracts hardened hex-section bolt.
• Key can be removed only when bolt is in a positively locked or unlocked position.
• Accepts any standard 1-5/32" mortise cylinder from either or both sides.
• Cylinder must have MS cam. (See page SW-33.)
• Faceplate Shape: Flat
• Finish: Clear Anodized