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Countersink Angle
60°
82°
90°
100°
110°
120°
System of Measurement
Inch
Metric
Body Diameter
1/8"
3/16"
1/4"
5/16"
3/8"
7/16"
1/2"
9/16"
5/8"
3/4"
13/16"
7/8"
1"
1
1/8"
1
1/4"
1
1/2"
1
3/4"
2"
2
1/2"
3"
For Use On
Aluminum
Brass
Bronze
Fiberglass
Iron
Nickel
Plastic
Stainless Steel
Steel
Titanium
Hardened Steel
Number of Flutes
0
1
2
3
4
6
Material
Carbide
Steel
Shank Diameter
1/8"
3/16"
1/4"
5/16"
3/8"
7/16"
1/2"
5/8"
3/4"
7/8"
1"
Overall Length
1
1/8"
1
1/4"
1
3/8"
1
1/2"
1
5/8"
1
3/4"
1
25/32"
1
7/8"
1
15/16"
2"
2
1/32"
2
1/8"
2
11/64"
2
1/4"
2
3/8"
2
1/2"
2
5/8"
2
3/4"
Finish
Aluminum Titanium Nitride (AlTiN) Coated
Black Oxide
Titanium Aluminum Nitride (TiAlN) Coated
Titanium Carbon Nitride (TiCN) Coated
Titanium Nitride (TiN) Coated
Uncoated
Shank Material
Carbide
Steel
Sold As
Individual
Set
Countersink Type
Standard
Carbide Insert
Drill Point
Length
1
1/8"
1
1/4"
1
3/8"
1
1/2"
1
5/8"
1
3/4"
1
25/32"
1
7/8"
1
15/16"
2"
2
1/32"
2
1/8"
2
11/64"
2
1/4"
2
3/8"
2
1/2"
2
5/8"
2
3/4"
Number of Countersinking Ends
1
2
For Cutting
Lathe Center Holes
Rivet Holes
Screw Holes
Drill Bit Size
0.010"
0.015"
0.020"
0.025"
1/32"
3/64"
1/16"
5/64"
3/32"
7/64"
1/8"
9/64"
5/32"
3/16"
7/32"
1/4"
5/16"
11/32"
3/8"
Hole Diameter
0.046"
0.078"
3/32"
to
15/64"
0.109"
1/8"
1/8"
to
15/64"
0.156"
3/16"
3/16"
to
13/32"
0.203"
13/64"
to
27/64"
1/4"
1/4"
to
3/4"
5/16"
5/16"
to
17/32"
0.328"
7/16"
7/16"
to
25/32"
Center Drill Trade Size
00000
0000
000
00
0
1
2
3
4
4
1/2
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Manufacturer
Dormer Pramet
Keo
M. A. Ford
Melin Tool
Republic Drill
Ultra Tool
U.S.–Mexico–Canada Agreement (USMCA) Qualifying
Yes
No
Export Control Classification Number (ECCN)
EAR99
DFARS Specialty Metals
Exempt
REACH
Compliant
Not Compliant
RoHS
Compliant
Not Compliant
Flute Type
Fluteless
Spiral
Straight
Body Diameters Included
1/4"
5/16"
3/8"
1/2"
5/8"
3/4"
1"
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1,830 Products
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316 products
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Cut a cone-shaped opening in a hole to install flat-head screws and rivets flush with the surface
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