Assa Abloy Securitron Magnalock M670BD Series Installation Instructions Manual page 11

NOTE: Steps 7 through 10c are performed if installing on a metal door frame.
7. DRILL two (2) 3/8" diameter holes at bracket-mounting hole marks.
8. DO NOT oversize the hole.
9. USE a step bit or pilot hole first to ensure a snug fit for the blind nuts.
3/8" diameter (Metal)
NOTE 1: Blind nuts provide a highly secure and tamper resistant system for mounting and are the
mounting hardware provided for this unit.
NOTE 2: Only approved included hardware should be used for mounting.
10. INSTALL blind nuts into each 3/8" diameter hole using the provided tool.
a. HOLD the collapsing nut with a 1/2" box end wrench.
b. MAINTAIN pressure on the mounting surface, TIGHTEN the cap screw using a 3/16"
hex wrench, and COLLAPSE the blind nut.
c. GO TO Step 12.
3/8" diameter (Metal)
Page 11
PN# 500-10550
Rev. D, 12/14