Schlage M490DE Installation Instructions And Use page 5

2
Attach armature to door.
2a Install armature holder.
OUTSIDE
2b Install armature plate as shown for door type (M420/M450 shown).
Armature bolt must be tightened to at least 120 in.-lbs. for all doors except
composite wood doors. For composite wood doors, tighten only to tight and flush.
120 in.-lbs. may damage composite wood doors.
DO NOT back off bolt after tightening! Backing off the bolt after tightening will
loosen the thread-locking patch, which may allow the bolt to loosen over time.
The included sex nut is for 1C\v" (45 mm) doors ONLY. For other door thicknesses,
please contact customer service, 1-877-671-7011. Using the incorrect sex nut for
your door thickness will lead to improper function and possible injury.
Wood Door
Sex Nut
Z\x" hole
through
Sex nut must extend all the way through hollow metal door
for proper installation. Improper Sex nut or installation may
lead to malfunction and injury. Extended lengths available
from customer service, 1-877-671-7011.
2x
WARNING
Armature Bolt
Armature Plate
Cone Washer
Star Locking Washer
Flat Washer
Armature Holder
WARNING
Armature holder screws must be
flush to inside of armature holder.
Correct
Reinforced Metal Door
OR
Drill and tap
for B\zn - 18
machine screw
OR
Hollow Metal Door
Sex Nut
ZZ\cx"
hole
Z\x" hole
CAUTION
Incorrect
Armature Bolt
Armature Plate
Cone Washer
Star Locking Washer
Flat Washer
Armature Holder
Armature Bolt
Armature Plate
Cone Washer
Star Locking Washer
Flat Washer
Armature Holder
5