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Adjustable Countersink Drill Bits - type J
Adjustable
Countersink Drill Bits
( Adjustable Pilot Drill Bits )
Type J, 1/4" Hex Shank
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*
Brad Point Drill
Bits
made from high-speed steel with Titanium
Coated or Bright Finish.
* Drill, countersink and counter-bore precision
screw holes in a single operation with General’s
Adjustable Pilot Bit Set. Featuring high-speed
steel drill bits with adjustable lengths, this
veracious set can be a great time saver for fine
carpentry and woodworking. * The 1/4" hex shank
allows the set to be used in both electric
drills and power screwdrivers.
* Countersink drill bits form pilot holes for
screws and create a conical recess for the screw
head. A countersink drill bit is best used on
soft materials such as wood or plastic, and will
not work on metals. It is often preferable to
create the countersink first, then drill into
the center. Counter sink drill bits can be used
with power drills and some routers. Using a
combination counter sink and clearance drill can
create both the counter sink and the pilot hole
in one action. An adjustable stop can be used to
fix the depth.
* Naturally different sized countersink drill
bits create different sized countersinks and
holes. Some counter sinks are available with
fitted handles so that the shallow depression
for the screw head can be formed by hand,
eliminating the need to constantly change bits.
Some countersink drills can remove plugs of wood
before creating the hole. These plugs can then
be used cover the recessed screw heads.
* Countersink Drill Bits Set are
available on request.
Size available:
Item
No.
|
Size
Metric
|
Size
Inch
|
For
Wood Screw Size
|
Countersink Size
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ADC3001-J
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2.0mm
|
5/64"
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For #4 screws
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3/8"
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ADC3002-J
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2.4mm
|
3/32"
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For #6 screws
|
3/8"
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ADC3003-J
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2.8mm
|
7/64"
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For #8 screws
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3/8"
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ADC3004-J
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3.2mm
|
1/8"
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For #10 screws
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3/8"
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ADC3005-J
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3.6mm
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9/64"
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For #12 screws
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3/8" or1/2"
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ADC3006-J
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4.0mm
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5/32"
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For #14 screws
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3/8" or 1/2"
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ADC3007-J
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4.4mm
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11/64"
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3/8" or 1/2"
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ADC3008-J
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4.76mm
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3/16"
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1/2"
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ADC3009-J
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5.6mm
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7/32"
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1/2"
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ADC3010-J
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6.35mm
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1/4"
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1/2"
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