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Tubular Mortise Bolt Installation 

Sectional Trim

41005 - 2016    ©Water Street Brass - All rights reserved 

Prepare the door

 

  

Establish the desired location on your door. Using 

the provided template for your lock, mark the hole 

locations on the door.* 
 

Using the drill & bore sizes specified on the tem-

plate, carefully drill the door. On the door edge, mark 

and drill two pilot holes for the installation screws.

Install the mortise bolt

 

Install the mortise bolt body and face plate into 

the door and secure loosely with the screws provided. 

Do not tighten completely at this time. 

Install the trim

 

There are three installation methods for your trim. 

Select the style that matches your trim.

Concealed screw trim

 

On the interior side of the door, center the mortise 

bolt mounting plate over the through hole. Secure the 

plate in position with the two screws provided.  
 

Slide the thumb turn stem into the mortise bolt 

body and hand thread the mortise bolt trim plate onto 

the mounting plate. If the trim plate does not align 

with the mounting plate, you may need to loosen the 

screws and adjust the location slightly. 

Note: 

The thumb turn stem is designed to fit doors in 

excess of 4” thick. Measure and cut this stem so that it 

reaches to the approximate center of the mortise bolt 

body. 

If you do not cut this stem to length, the emer-

gency egress function may not work. 

 

 

Repeat the procedure  for the emergency egress 

trim on the door exterior. 

Surface Mount trim

 

Position the thumb turn and plate on the interior 

side of the door and insert the stem into the bolt body. 
  

Square the plate to the edge of the door and mark 

the screw hole locations. Remove the plate and drill 

pilot holes for the surface mount screws. These holes 

will prevent the wood from cracking or splitting when 

inserting the screws. 
 

Cut the thumb turn stem to length (See note 

above.) Proceed to install the interior plate and test the  

function of the mortise bolt. 
 

Repeat the procedure  for the emergency egress 

trim on the door exterior. 

Tap in exterior trim

 

If your Emergency Egress trim is the optional tap in 

variety, use a rubber mallet to gently tap the emergen-

cy egress collar into the through hole on the exterior 

side of the door. 
 

Hand screw the emergency egress access button 

into the collar - do not over tighten.

Door jamb

 

Carefully measure the jamb to determine the exact 

location that the latch strike and lock bolt land when 

the door is fully closed.  Mark the locations.  Using the 

strike plate as a template, outline the shape and begin 

to mortise the door jamb to accept the strike.
 

Mortise the dust box cavity as shown here.  

 

After installation, if the latch does not fully engage 

with the strike, loosen the screws and adjust slightly.    

Face Plate

Face Plate

Screws

Mortise Bolt Body

Backset

1

Strike

Screws

3/32”

Dust Box

Strike Plate

Door Jamb

1-3/8”

7/8”

7/8”

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