MS2180 Auto-Release Two-Point Flushbolt

Description: The MS2180 Auto-Release Two-Point Flushbolt works in conjunction with any MS pivoting deadlock to provide maximum security for paired doors.

Function: Used instead of code-violating manual (flip-lever) flushbolts in the inactive leaf of paired doors. One turn pins the inactive leaf in position. The pivoting MS® deadlock in the active leaf secures the entire opening. The action of securing the MS® deadlock trips an internal mechanism in the MS2180 so that when the MS® deadlock is retracted, the entire opening releases with only one operation. This auto-release two-point flushbolt must be installed with a pivoted bolt MS® deadlock. Not to be used as a standalone locking mechanism.

Operation: Turn knob or lever 120° counterclockwise to throw stainless steel bolts into header and threshold and clear strike opening so pivoted MS® bolt can enter from active door. Clockwise turn retracts vertical bolts and blocks entry of pivoted bolt. Operates in conjunction with any MS® pivoting deadlock.


Turn Height: Matches cylinder height of MS® deadlock in active door, adjustable from 34” to 48”.

Turn Lever/Indicator: MS2180 has an hourglass shape for a firm finger grip. Red lettered indicator shows “LOCKED” when secure. MS2181 has a teardrop shaped turn lever. MS2182 is a limited-access flush turn to comply with IBC requirements for “no doorknob” actuation. MS2182 is supplied with an activation tool.

Top and Bottom Bolts: Hexagonal 3/8” flat to flat. Stainless steel. Guides furnished. Bolt throw is 23/32”. Strike required in metal headers and thresholds is 1/2" diameter hole. For wood installation, two 4005 strikes required are available separately.

Interlock: Mechanism includes device to prevent entry of pivoted bolt until vertical bolts are locked and conversely, to prevent unlocking of vertical bolts when pivoted bolt is locked.

Monitoring: Monitoring Kit available as add-on switch kit that signals when the top and bottom bolts are fully projected and the MS® deadlock is in the extended and locked position. More than an easily defeated door position switch, the MK-2180 Monitoring Kit provides a tamper-proof indication of the door position and locked condition. Form C switch.

Options: For wood header or threshold, 4005 strikes available separately. Monitor Kit MK-2180 available separately.

Standard Package: Individually boxed with bolt guides and screws. Shipping weight: 2 lbs.


Related Products: When purchasing this product, please consider the following related products, available separately:

Accessories Deadlocks

MK 2180 Monitoring Kit available separately.

MS1850S(-050), MS1850SN(-050), 1850S-020 (shortbolt), MS1950