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Countersink Single Flute
COUNTER SINK BIT: HSS 1/4″ SINGLE FLUTE 1/4″ SHANK 90D
SKU:
CTB2841402
* This single flute countersink bit is manufactured from quality HSS-M2
* This offers durability and long service life
* Comes with 1/4" shank
Choosing the Right Countersink
How to Choose The Right Size Countersink by Diameter
A simple rule of thumb is to choose a countersink which is 50% larger than the diameter of the hole
Countersink diameter = 1.5 x bolt size (hole) diameter
Ex: For a 1/4-20 bolt, multiply the diameter (.250) x 1.5 = .375. This equates to a 3/8” countersink
How to Choose The Right Size Countersink by Angle
Angle is based on the screw or bolt type being used
82º is most common
COUNTER SINK BIT: HSS 3/8″ SINGLE FLUTE 1/4″ SHANK 90D
SKU:
CTB2841404
* This single flute countersink bit is manufactured from quality HSS-M2
* This offers durability and long service life
* Comes with 1/4" shank
Choosing the Right Countersink
How to Choose The Right Size Countersink by Diameter
A simple rule of thumb is to choose a countersink which is 50% larger than the diameter of the hole
Countersink diameter = 1.5 x bolt size (hole) diameter
Ex: For a 1/4-20 bolt, multiply the diameter (.250) x 1.5 = .375. This equates to a 3/8” countersink
How to Choose The Right Size Countersink by Angle
Angle is based on the screw or bolt type being used
82º is most common
COUNTER SINK BIT: HSS 1/2″ SINGLE FLUTE 1/4″ SHANK 90D
SKU:
CTB2841406
* This single flute countersink bit is manufactured from quality HSS-M2
* This offers durability and long service life
* Comes with 1/4" shank
Choosing the Right Countersink
How to Choose The Right Size Countersink by Diameter
A simple rule of thumb is to choose a countersink which is 50% larger than the diameter of the hole
Countersink diameter = 1.5 x bolt size (hole) diameter
Ex: For a 1/4-20 bolt, multiply the diameter (.250) x 1.5 = .375. This equates to a 3/8” countersink
How to Choose The Right Size Countersink by Angle
Angle is based on the screw or bolt type being used
82º is most common
COUNTER SINK BIT: HSS 3/4″ SINGLE FLUTE 1/2″ SHANK 90D
SKU:
CTB2841408
* This single flute countersink bit is manufactured from quality HSS-M2
* This offers durability and long service life
* Comes with 1/2" shank
Choosing the Right Countersink
How to Choose The Right Size Countersink by Diameter
A simple rule of thumb is to choose a countersink which is 50% larger than the diameter of the hole
Countersink diameter = 1.5 x bolt size (hole) diameter
Ex: For a 1/4-20 bolt, multiply the diameter (.250) x 1.5 = .375. This equates to a 3/8” countersink
How to Choose The Right Size Countersink by Angle
Angle is based on the screw or bolt type being used
82º is most common
COUNTER SINK BIT: HSS 1″ SINGLE FLUTE 1/2″ SHANK 90D
SKU:
CTB2841410
* This single flute countersink bit is manufactured from quality HSS-M2
* This offers durability and long service life
* Comes with 1/2" shank
Choosing the Right Countersink
How to Choose The Right Size Countersink by Diameter
A simple rule of thumb is to choose a countersink which is 50% larger than the diameter of the hole
Countersink diameter = 1.5 x bolt size (hole) diameter
Ex: For a 1/4-20 bolt, multiply the diameter (.250) x 1.5 = .375. This equates to a 3/8” countersink
How to Choose The Right Size Countersink by Angle
Angle is based on the screw or bolt type being used
82º is most common