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For safe and correct operation of the products, read 

this manual carefully and follow the direction given 

in it to correctly install it.

Check that the package contains each items correctly.

After the product is installed, hand this manual over to the 

user, who should keep it for later consultation.

Parts composition

Turn the knob of Thumb turn 90

°

in the direction of ARROW showing, while depressing Trigger with 

your finger. If Hook comes out smoothly, you have installed Sliding door latch correctly.

In case of model HC-30HL (type with Indicator), make sure the color of Indicator changes from

“blue” to “red”, or vice versa. Indicator “blue” shows an unlatched status and Indicator “red” shows an 

latched status. If the showing color does not meet this manual specification, return to Step

 and 

mount Indicator again.

Checking the operation of Latch

 Mounting  Latch body

Mount Latch body onto the sliding door with Wooden 

screws (3.5 x 20).

 Mounting  Thumb turn and  Spindle

Insert Spindle into the square hole of Thumb turn. Then, insert the 

pin into the square hole of Latch body to mount Thumb turn itself 

on Latch body. (Keep the knob of Thumb turn at vertical position.) 

 Mounting Indicator / Emergency Release

Insert Spindle into Indicator or Emergency Release 

from outside (Set the color of Indicator to “blue”). Fix 

Indicator or Emergency Release using mounting. 

screws 

 Strike and  Strike plate

Set the seat and the plate into the notched hole of door 

sash with Wooden screws (3.5 x 20).

Check that 

Hook is set 

inside Latch 

body.

Should Hook be out of Latch body, insert 

Spindle into the square hole of Latch body, 

turn Spindle, and push Hook into Latch 

body, while holding Trigger inward with 

your finger.

Installing procedures

Sliding Door Latch,  Model HC-30L

Model HC-30HL (with indicator)

Refer the below drawings for your notch working correctly.

Drawing for notch working

Note 1: Three sizes of mounting screws 

are included. Select a proper size 

of screw to fit the thickness of 

your door.

For door thickness 28

32 mm:  

Screw length 22mm

For door thickness 33

36 mm:  

Screw length 27mm

For door thickness 37

40 mm:  

Screw length 32mm

Note 2: Three lengths of Spindle are 

included. Select a proper length of 

Spindle to fit the thickness of your 

door.

For door thickness 28

31 mm:  

Screw length 23mm

For door thickness 32

36 mm:  

Screw length 27mm

For door thickness 37

40 mm:  

Screw length 32mm

Screw for mounting the main body of the latch (See Note 1)

Through hole, ø37

15

16.5

*

10.5

16.5

*

9

30

3.6

*

53

3

*

14.5

66

66

65

65

80 95.5

*

33

15

15

80 95.5

*

Emergency Release

 (HC-30L only)

 Thumb turn

Spindle (See Note 2)

Wooden screw 

(3.5 x 20)

Mounting 

screw

Thumb turn

Thumb turn

Thumb turn

Trigger

Hook

Indicator

“Unlatched”

Blue

Indicator

 (outside)

Door sash

Strike

Strike plate

Wooden screws (3.5 x 20)

Latch body

Thumb turn

Square hole

Spindle

Square hole

Thumb turn

Latch body

Sliding door

Hook

 Trigger

Strike plate

Strike

Wooden screw

 (3.5 x 20)

Latch body

 Indicator

 (HC-30HL only)

 HC-30HL 

(with indicator)

Indicator

“Latched”

Red

 HC-30HL 

(with indicator)

 Strike and Strike plate (Sash side)

 Latch body (Sliding door side)

Centerline

Thickness 

(See Notes above.)

Centerline

Sliding door 

side

 Square hole

Spindle

Outside

Indicator 

(surface) 

Blue

Installation Manual

Dimensions marked with an asterisk (*) should be processed in accordance with the actual product size.

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