Specifications

MIWA Deadbolt
The MIWA deadbolt has a couple of interesting features,
and is lacking one important high security characteristic. I
installed the MIWA deadbolt in my “PROBING MOUNT.”
This is just a mount that had a lever lockset mounted
correctly on it. I just enlarged the holes at 12:00 and 6:00 to
allow for easy probing of the mounted deadbolt.
Photograph 9, shows the special tool (bent paper clip) that
is incorporated to remove the front cover of the lock. Just
inset this clip and push down the spring loaded pin and the
front cover pops off. This is for installing the lock and for
removing the lock.
Photograph 10, shows
the lock with the operating
key installed. It also lets
you see one mounting
screw hole and a large
ball bearing that protects
the end of the other cap
screw.
With this double
cylinder deadbolt, a
mounting screw is
installed from either
side of the lock,
reminiscent of older
type deadbolts in the
United States. One
screw is installed from
each side of the lock
to hold it in position.
The one thing that
this lock does NOT have is an anti-probe
guard. That is why I installed it in the probing fixture.
Photograph 11, shows the bolt being pulled back with an ice
pick. This lock is supposed to be installed in a 1-1/2 inch
hole, so in real life, you could use your drill to penetrate to
the bolt cavity and pry it back that way.
MIWA has an interesting concept for master keying. It is
done on the key and not in the cylinder. The keyway has no
inner moving parts, so it is resistant to super glue attacks.
An anti-picking guard should be included. Most lower priced
August 1996 • 51
7. Shear head cap screws, ball bearings and
hardened pin inserts at the shear line are standard
features on the Mul-T-Lock Deadbolt.
8. I am ashamed to admit that
despite my best efforts in the
Test Lab, I could only slightly
mark the finish on the Mul-T-
Lock.
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