Assa Abloy Securitron Magnalock M670BD Series Installation Instructions Manual page 14

From INSIDE the door:
4. DRILL one (1) 3/8" diameter hole for the sex bolt
through the door at the strike mounting center mark.
5. DRILL two (2) 3/8" diameter x 1" deep holes at
each side mark for the strike alignment roll pins,
but DO NOT DRILL through the door.
From OUTSIDE the door:
6. For a Hollow Metal Door, DRILL out the 3/8"
diameter strike mounting hole to 1/2" diameter
in the outer wall only.
7. For a Solid Wood Door, DRILL out 3/8"
diameter strike mounting hole to 1/2" diameter;
DRILL completely through.
8. PERFORM the following to install roll pins
into strike plate.
a. REMOVE the two (2) roll pins from the
hardware packet.
b. INSERT a roll pin into each of the holes
in back of strike.
c. Gently TAP into place using a hammer.
Page 14
PN# 500-10550
Rev. D, 12/14