MS1950P Series MS® Deadlocks

The stainless steel MS1950P Series MS® Deadlock utilizes a laminated stainless steel bolt, now with enhanced security features, to provide maximum security for a single leaf narrow stile aluminum door.
The stainless steel MS1950P-X5X Series MS® Deadlock utilizes a laminated stainless steel hookbolt, now with enhanced security features, to provide maximum security for a sliding narrow stile aluminum door.
Both are activated by a pivot mechanism.


A 3" laminated stainless steel bolt and complete stainless steel construction makes the heavy duty MS1950P MS® Deadlock a higher security, premium locking solution for swinging doors. The MS1950P is compatible with header and threshold bolts to accommodate multi-point locking in a double door application. The stainless steel hookbolt of the MS1950P-X5X Series MS® Deadock answers the security need of sliding doors. The hook shaped bolt resists the parting motion of sliding door and jamb.



For ingress, a 360˚ turn of the key or thumbturn on the exterior cylinder retracts the counterbalanced bolt. While the bolt is retracted the door acts as a passage function, until the deadlock is re-locked from either side of the opening. Typically, if the door remains unlocked during business hours, the interior side is equipped with a mortise cylinder and indicator to allow for flexible traffic control by management. An interior thumbturn to lock the bolt and a 4550 lever can also be installed on the interior side to ensure free egress & ADA compliance.

Key can be removed only when bolt is in a locked or unlocked state. Lock body accepts a mortise cylinder, thumbturn, 4089 indicator, or 4550 deadlock lever from either side.


Cylinder Backset: 31/32" [24.6 mm], 1-1/8" [28.6 mm], or 1-1/2" [38.1 mm] only.

Case: Measures 1" x 6" x depth [25.4 mm x 152.4 mm x depth], depth varies bybackset (see catalog page). Fully stainless steel case and internal components. Stainless steel metal plate to block contact with the inner locking cam assembly.

Bolt: Eight-ply laminated stainless steel. Center ply has alumina-ceramic core to defeat any hacksaw attack, including rod-type “super” hacksaws.
MS1950P Bolt: Standard straight bolt measures 5/8" x 1-3/8" x 2-7/8" [15.9 mm x 34.9 mm x 73.0 mm] with 1-3/8" [34.9 mm] throw.
MS1950P-X5X Bolt: 5/8" x 1-3/8” [15.9 mm x 349.9 mm] with 13/16” [20.3 mm] throw. Hook shape repels pry bar attempts to “spread” the door from its jamb or lift it off its track.

Faceplate: Measures 1" x 6-7/8" [25.4 mm x 174.6 mm].

Strike: See catalog page for dimensions of strike slot which can be cut in metal jamb. Trim plate, box strike, and armored strike are available separately.

Standard Package: Individually boxed with machine screws for mounting. Cylinders and/or thumbturns available separately.

Shipping weight: 1-1/2 lbs. [0.68 kg]



“SCHOOLHOUSE” version, also available, is modified so that operation from inside is “unlock only”. This lock is handed and must be specified LH or RH. Specify Series SCH1950, (-X5X). Same faceplate and backset options as Series MS1950P, (-X5X).


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

Accessories Cylinders Trim Special Order Options

4000, 4001, MS4002 Deadlock Strikes4015 Threshold Bolt4016 Header Bolt for multi-point locking, 4085 Header Bolt for pairs of doors.  

4089 Exit Indicator

Lock mounting accessories and options

Standard 1" length, 1-5/32” diameter mortise cylinder with MS® cam such as 4036 Mortise Cylinder, 4066ThumbturnMS4043 Cylinder Guard

3090-150 e-force Series Keyless Entry, 4550 Deadlock Lever

Schoolhouse function available as special order.