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DRIVING WOOD SCREWS
1.
Drill pilot and shank clearance holes. See following chart:
SUGGESTED HOLE SIZES
FOR WOOD SCREWS
Shank Drill
Screw
Clearance
Size
Diameter
#6
9
/
64
#8
11
/
64
#10
3
/
16
#12
7
/
32
2.
Install proper screwdriver bit.
3.
Set torque adjusting collar for desired torque and set speed selector to
LOW.
4.
Set screwdriver for correct rotation.
5.
Start screw straight in hole with fingers.
6.
Place bit on screw, start screwdriver and exert pressure to drive screw.
7.
As soon as screw has seated, lift screwdriver from screw.
8.
A lubricant, such as soap or wax, may be used on screw threads for ease
of driving. This is particularly important in hard wood.
9.
Combination pilot drill, shank drill and countersink bits are available from
local supply houses for drilling holes in one easy operation.
DRIVING SELF-TAPPING SCREWS
1.
Drill pilot hole of correct size as recommended by screw manufacturer for
fastener being used.
2.
Install proper screwdriver bit.
3.
Set torque adjusting collar for desired torque and set speed selector to
LOW.
4.
Set screwdriver for correct rotation.
5.
Position bit in head of screw.
6.
Place end of screw into pre-drilled hole, remove fingers, start screwdriv-
er and drive screw.
7.
As soon as screw has seated, lift screwdriver from screw.
DRIVING MACHINE SCREWS
1.
Drill and tap correct hole size for fastener to be used.
2.
Start screw in hole with fingers and drive as outlined under DRIVING
WOOD SCREWS.
TO REMOVE SCREWS
1.
Set torque adjusting collar for maximum torque and set speed selector to
LOW.
2.
Install proper screwdriver bit.
3.
Set screwdriver for reverse rotation.
4.
Place bit in screw and start drill to remove screw.
Pilot Drill Diameter
Soft
Wood
(.140)
1
(.062)
/
16
(.172)
5
(.078)
/
64
(.187)
3
(.094)
/
32
(.218)
7
(.109)
/
64
Hard
Wood
7
(.109)
/
64
1
(.125)
/
8
9
(.140)
/
64
5
(.156)
/
32
11
↑
Shank
Drill
↓
↑
Pilot
Drill
↓
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