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About Countersinks
Choose the right countersink angle, body diameter, and number of flutes for your application.
Drill-Point Countersink Sets for Screws
82° Countersink Angle | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
No. of Flutes | No. of Pieces | For Screw Size | Finish | Shank Type | Container Type | Mfr. | Each | |||
High-Speed Steel | ||||||||||
| 2 | 8 | No. 5, No. 6, No. 8, No. 10, No. 12, 1/4", 5/16", 3/8" | Uncoated | Round | Plastic Case | Link Industries | 28145A61 | 0000000 | ||
Quick-Change Hex Drill-Bit Countersinks for Wood and Plastic
High-Speed Steel
Countersinks | Depth Stops | Drill Bits | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Screw Size | Uncoated | ||||||||||||||
Body Dia. | Max. Hole Drilling Dp. | Hard Wood | Soft Wood | Overall Lg. | Shank Size | Shank Type | Mfr. | Each | Each | Each | |||||
2 Flutes | |||||||||||||||
82° Countersink Angle | |||||||||||||||
| 1/2" | 1" | — | No. 6 | 2 11/16" | 1/4" | Quick-Change Hex | Make It Snappy Tools | 2747A22 | 00000 | 3438N11 | 000000 | 8870A16 | 00000 | ||
| 1/2" | 1" | No. 6 | No. 8 | 2 27/32" | 1/4" | Quick-Change Hex | Make It Snappy Tools | 2747A23 | 0000 | 3438N11 | 00000 | 8870A17 | 0000 | ||
Drill-Point Countersinks for Screws
High-Speed Steel
2 Flutes |
Dia. | Uncoated | Titanium Nitride (TiN) Coated | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Body | Shank | Drill Tip Dia. | For Screw Size | Overall Lg. | Shank Type | Mfr. | Each | Mfr. | Each | ||||
2 Flutes | |||||||||||||
82° Countersink Angle | |||||||||||||
| 5/16" | 1/4" | 0.140" | No. 6 | 1 3/4" | Round | Link Industries | 28145A42 | 000000 | Link Industries | 11206N42 | 000000 | ||
82° Countersink Angle—For Tapping Screws | |||||||||||||
| 5/16" | 1/4" | 0.099" | No. 6 | 1 3/4" | Round | Keo | 28145A22 | 00000 | — | ——— | 0 | ||
Cobalt Steel
2 Flutes |
Dia. | Uncoated | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Body | Shank | Drill Tip Dia. | For Screw Size | Overall Lg. | Shank Type | Mfr. | Each | |||
2 Flutes | ||||||||||
82° Countersink Angle | ||||||||||
| 5/16" | 1/4" | 0.140" | No. 6 | 1 3/4" | Round | Link Industries | 11169N12 | 000000 | ||
Countersink Drill Bits for Screws
Dia. | Lg. | 82° Countersink Angle | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Screw Size | Body | Step | Step | Overall | Shank Dia. | Point Angle | For Use On | Mfr. | Each | |||
Uncoated High-Speed Steel | ||||||||||||
2 Flutes | ||||||||||||
| No. 6 | 0.281" | 0.142" | 1/2" | 4 1/4" | 0.2813" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | Republic Drill | 8914A51 | 000000 | ||
Uncoated Cobalt Steel | ||||||||||||
2 Flutes | ||||||||||||
| No. 6 | 0.281" | 0.142" | 1/2" | 4 1/4" | 0.2813" | 118° | Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel | Republic Drill | 11188N49 | 00000 | ||
Drill-Point Counterbores Sets
For Screw Size | Overall Length | Shank Type | No. of Flutes | No. of Pieces | Container Type | Mfr. | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|
Uncoated High-Speed Steel | ||||||||||
| No. 5, No. 6, No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2" | 1.21875", 1.21875", 1.46875", 1.5", 1.75", 1.9375", 2.34375", 2.5", 2.6875" | Round | 2 | 9 | Plastic Case | Link Industries | 9940N111 | 0000000 | ||
| No. 5, No. 6, No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2" | 2", 2", 2.25", 2.25", 2.75", 3", 3.5", 4", 4.5" | Round | 2 | 9 | Plastic Case | Link Industries | 9940N112 | 000000 | ||
Drill-Bit Countersinks for Wood and Plastic
High-Speed Steel
Built-in-Pilot Counterbore Sets
For Screw Size | Shank Type | No. of Flutes | No. of Pieces | Mfr. | Each | |||
|---|---|---|---|---|---|---|---|---|
Uncoated High-Speed Steel | ||||||||
| No. 4, No. 5, No. 6, No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2" | Round | 4 | 10 | Alvord-Polk Tool | 2919A12 | 0000000 | ||
Counterbores for High-Profile Rounded-Head Screws
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Uncoated | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
For Screw Size | Body Dia. | Overall Lg. | Shank Type | No. of Flutes | Pilot Lg. | Mfr. | Each | |||
| No. 6 | 0.241" | 2 5/8" | Round | 2 | 0.230" | Republic Drill | 2909A17 | 000000 | ||
Oversized Long-Life Counterbore Drill Bits
Dia. | Lg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Screw Size | Body | Step | Step | Overall | No. of Flutes | Point Angle | For Use On | Mfr. | Each | |||
Uncoated High-Speed Steel | ||||||||||||
1/64" Oversize | ||||||||||||
| No. 6 | 0.234" | 0.146" | 5/16" | 2 7/16" | 2 | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | RTS Cutting Tools | 29525A41 | 000000 | ||
Counterbore Drill Bits
Dia. | Lg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
For Screw Size | Body | Step | Step | Overall | Point Angle | For Use On | Mfr. | Each | |||
Uncoated High-Speed Steel | |||||||||||
| No. 6 | 0.250" | 0.15" | 1/2" | 4" | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | Republic Drill | 8914A31 | 000000 | ||
Oversized Counterbore Sets
For Screw Size | Oversize Amount | Shank Type | No. of Flutes | No. of Pieces | Mfr. | Each | |||
|---|---|---|---|---|---|---|---|---|---|
Uncoated High-Speed Steel | |||||||||
| No. 4, No. 5, No. 6, No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2" | 1/64" | Round | 4 | 10 | Alvord-Polk Tool | 2919A14 | 0000000 | ||
| No. 4, No. 5, No. 6, No. 8, No. 10, 1/4", 5/16", 3/8", 7/16", 1/2" | 1/32" | Round | 4 | 10 | Alvord-Polk Tool | 2919A16 | 000000 | ||
Oversized Counterbores
High-Speed Steel%20--%3e%3csvg%20version='1.1'%20id='Layer_1'%20xmlns='http://www.w3.org/2000/svg'%20xmlns:xlink='http://www.w3.org/1999/xlink'%20x='0px'%20y='0px'%20viewBox='0%200%20400%20400'%20style='enable-background:new%200%200%20400%20400;'%20xml:space='preserve'%3e%3cstyle%20type='text/css'%3e%20.st0{fill:%231A70A0;}%20.st1{opacity:0.5;}%20%3c/style%3e%3cg%3e%3cg%3e%3cpath%20class='st0'%20d='M200,56.9c38.35,0,74.4,14.93,101.51,42.05c27.11,27.11,42.05,63.17,42.05,101.51s-14.93,74.4-42.05,101.51%20S238.35,344.02,200,344.02s-74.4-14.93-101.51-42.05c-27.11-27.11-42.05-63.17-42.05-101.51s14.93-74.4,42.05-101.51%20S161.65,56.9,200,56.9%20M200,12.9C96.41,12.9,12.44,96.88,12.44,200.46c0,103.59,83.97,187.56,187.56,187.56%20c103.59,0,187.56-83.97,187.56-187.56C387.56,96.88,303.59,12.9,200,12.9L200,12.9z'/%3e%3c/g%3e%3cg%3e%3cg%20class='st1'%3e%3cpath%20class='st0'%20d='M235.49,152.24h16.15l-27.46,111.87c-1.94,7.8-2.91,12.5-2.91,14.1c0,1.82,0.58,3.29,1.73,4.41%20c1.16,1.12,2.69,1.68,4.61,1.68c5.23,0,11.78-3.85,19.63-11.55l17.22,21.34c-16.95,17.33-34.87,26-53.78,26%20c-8.37,0-15.45-1.47-21.23-4.41c-5.79-2.94-10.44-7.25-13.95-12.92c-3.51-5.67-5.27-11.18-5.27-16.53c0-1.93,0.35-5.24,1.05-9.94%20c1-6.94,2.05-12.54,3.15-16.82l15.22-62.15h-32.69l7.65-30.97C190.89,163.58,214.53,158.88,235.49,152.24z%20M230.44,80.84%20c8.24,0,14.66,2.62,19.26,7.86c4.6,5.24,6.9,11.55,6.9,18.94c0,5.46-1.42,10.7-4.25,15.73c-2.83,5.03-6.88,9.07-12.12,12.12%20c-5.24,3.05-10.33,4.57-15.24,4.57c-4.6,0-9.17-1.23-13.72-3.69c-4.55-2.46-8.02-5.78-10.43-9.95%20c-2.41-4.17-3.61-8.67-3.61-13.48c0-5.35,1.52-10.64,4.57-15.89c3.05-5.24,7.03-9.25,11.96-12.04%20C218.68,82.23,224.24,80.84,230.44,80.84z'/%3e%3c/g%3e%3cg%3e%3cpath%20class='st0'%20d='M214.08,152.24h16.15l-27.46,111.87c-1.94,7.8-2.91,12.5-2.91,14.1c0,1.82,0.58,3.29,1.73,4.41%20c1.16,1.12,2.69,1.68,4.61,1.68c5.23,0,11.78-3.85,19.63-11.55l17.22,21.34c-16.95,17.33-34.87,26-53.78,26%20c-8.37,0-15.45-1.47-21.23-4.41c-5.79-2.94-10.44-7.25-13.95-12.92c-3.51-5.67-5.27-11.18-5.27-16.53c0-1.93,0.35-5.24,1.05-9.94%20c1-6.94,2.05-12.54,3.15-16.82l15.22-62.15h-32.69l7.65-30.97C169.48,163.58,193.11,158.88,214.08,152.24z%20M209.03,80.84%20c8.24,0,14.66,2.62,19.26,7.86c4.6,5.24,6.9,11.55,6.9,18.94c0,5.46-1.42,10.7-4.25,15.73c-2.83,5.03-6.88,9.07-12.12,12.12%20c-5.24,3.05-10.33,4.57-15.24,4.57c-4.6,0-9.17-1.23-13.72-3.69c-4.55-2.46-8.02-5.78-10.43-9.95%20c-2.41-4.17-3.61-8.67-3.61-13.48c0-5.35,1.52-10.64,4.57-15.89c3.05-5.24,7.03-9.25,11.96-12.04%20C197.26,82.23,202.83,80.84,209.03,80.84z'/%3e%3c/g%3e%3c/g%3e%3c/g%3e%3c/svg%3e)
Pilot | Shank | Uncoated | Titanium Nitride (TiN) Coated | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Screw Size | Body Dia. | Dia. | Lg. | Overall Lg. | Dia. | Type | No. of Flutes | Mfr. | Each | Each | ||||
1/64" Oversize | ||||||||||||||
| No. 6 | 0.244" | 0.154" | 0.219" | 4 5/8" | 7/32" | Round | 4 | Alvord-Polk Tool | 2919A53 | 000000 | 28225A53 | 000000 | ||
1/32" Oversize | ||||||||||||||
| No. 6 | 0.259" | 0.169" | 0.219" | 4 5/8" | 7/32" | Round | 4 | Alvord-Polk Tool | 2919A73 | 00000 | 28225A73 | 00000 | ||
Drill-Point Counterbores
Long-Life Counterbore Drill Bits
Dia. | Lg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Screw Size | Body | Step | Step | Overall | No. of Flutes | Point Angle | For Use On | Mfr. | Each | |||
Uncoated High-Speed Steel | ||||||||||||
| No. 6 | 0.228" | 0.141" | 5/16" | 3 7/8" | 2 | 118° | Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel | RTS Cutting Tools | 29525A42 | 000000 | ||
Built-in-Pilot Counterbores
Cobalt Steel%20--%3e%3csvg%20version='1.1'%20id='Layer_1'%20xmlns='http://www.w3.org/2000/svg'%20xmlns:xlink='http://www.w3.org/1999/xlink'%20x='0px'%20y='0px'%20viewBox='0%200%20400%20400'%20style='enable-background:new%200%200%20400%20400;'%20xml:space='preserve'%3e%3cstyle%20type='text/css'%3e%20.st0{fill:%231A70A0;}%20.st1{opacity:0.5;}%20%3c/style%3e%3cg%3e%3cg%3e%3cpath%20class='st0'%20d='M200,56.9c38.35,0,74.4,14.93,101.51,42.05c27.11,27.11,42.05,63.17,42.05,101.51s-14.93,74.4-42.05,101.51%20S238.35,344.02,200,344.02s-74.4-14.93-101.51-42.05c-27.11-27.11-42.05-63.17-42.05-101.51s14.93-74.4,42.05-101.51%20S161.65,56.9,200,56.9%20M200,12.9C96.41,12.9,12.44,96.88,12.44,200.46c0,103.59,83.97,187.56,187.56,187.56%20c103.59,0,187.56-83.97,187.56-187.56C387.56,96.88,303.59,12.9,200,12.9L200,12.9z'/%3e%3c/g%3e%3cg%3e%3cg%20class='st1'%3e%3cpath%20class='st0'%20d='M235.49,152.24h16.15l-27.46,111.87c-1.94,7.8-2.91,12.5-2.91,14.1c0,1.82,0.58,3.29,1.73,4.41%20c1.16,1.12,2.69,1.68,4.61,1.68c5.23,0,11.78-3.85,19.63-11.55l17.22,21.34c-16.95,17.33-34.87,26-53.78,26%20c-8.37,0-15.45-1.47-21.23-4.41c-5.79-2.94-10.44-7.25-13.95-12.92c-3.51-5.67-5.27-11.18-5.27-16.53c0-1.93,0.35-5.24,1.05-9.94%20c1-6.94,2.05-12.54,3.15-16.82l15.22-62.15h-32.69l7.65-30.97C190.89,163.58,214.53,158.88,235.49,152.24z%20M230.44,80.84%20c8.24,0,14.66,2.62,19.26,7.86c4.6,5.24,6.9,11.55,6.9,18.94c0,5.46-1.42,10.7-4.25,15.73c-2.83,5.03-6.88,9.07-12.12,12.12%20c-5.24,3.05-10.33,4.57-15.24,4.57c-4.6,0-9.17-1.23-13.72-3.69c-4.55-2.46-8.02-5.78-10.43-9.95%20c-2.41-4.17-3.61-8.67-3.61-13.48c0-5.35,1.52-10.64,4.57-15.89c3.05-5.24,7.03-9.25,11.96-12.04%20C218.68,82.23,224.24,80.84,230.44,80.84z'/%3e%3c/g%3e%3cg%3e%3cpath%20class='st0'%20d='M214.08,152.24h16.15l-27.46,111.87c-1.94,7.8-2.91,12.5-2.91,14.1c0,1.82,0.58,3.29,1.73,4.41%20c1.16,1.12,2.69,1.68,4.61,1.68c5.23,0,11.78-3.85,19.63-11.55l17.22,21.34c-16.95,17.33-34.87,26-53.78,26%20c-8.37,0-15.45-1.47-21.23-4.41c-5.79-2.94-10.44-7.25-13.95-12.92c-3.51-5.67-5.27-11.18-5.27-16.53c0-1.93,0.35-5.24,1.05-9.94%20c1-6.94,2.05-12.54,3.15-16.82l15.22-62.15h-32.69l7.65-30.97C169.48,163.58,193.11,158.88,214.08,152.24z%20M209.03,80.84%20c8.24,0,14.66,2.62,19.26,7.86c4.6,5.24,6.9,11.55,6.9,18.94c0,5.46-1.42,10.7-4.25,15.73c-2.83,5.03-6.88,9.07-12.12,12.12%20c-5.24,3.05-10.33,4.57-15.24,4.57c-4.6,0-9.17-1.23-13.72-3.69c-4.55-2.46-8.02-5.78-10.43-9.95%20c-2.41-4.17-3.61-8.67-3.61-13.48c0-5.35,1.52-10.64,4.57-15.89c3.05-5.24,7.03-9.25,11.96-12.04%20C197.26,82.23,202.83,80.84,209.03,80.84z'/%3e%3c/g%3e%3c/g%3e%3c/g%3e%3c/svg%3e)
Pilot | Shank | Uncoated | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Screw Size | Body Dia. | Dia. | Lg. | Overall Lg. | Dia. | Type | No. of Flutes | Mfr. | Each | |||
| No. 6 | 0.228" | 0.138" | 0.203" | 3" | 7/32" | Round | 3 | Keo | 11162N13 | 000000 | ||
Long-Reach Drill-Bit Countersinks
Fluteless Smooth-Finish Countersink Drill Bits for Screws
Dia. | Lg. | 82° Countersink Angle | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Screw Size | Body | Step | Step | Overall | Shank Dia. | Point Angle | For Use On | Mfr. | Each | |||
Uncoated Cobalt Steel | ||||||||||||
0 Flutes | ||||||||||||
| No. 6 | 7/16" | 0.154" | 7/16" | 4" | 0.4380" | 118° | Aluminum, Brass, Bronze, Plastic | Link Industries | 11207N11 | 000000 | ||


































