Countersinks

These countersinks are primarily for use on portable drills and clamp to the center drill with a set screw. Available in 3/8 to 3/4" for center drills sized 1/8 to 3/8".

Additional countersinks can be found in our Drill Bits for Boring Machines section.

Southeast Tool
Clamp-on Countersink, 16mm Dia for 5mm Drill, Southeast Tool CSP1605RH
Carbide tipped countersink clamps on to the spiral of a 5mm drill and cuts up to a 16mm countersink.…

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $16.01

Was:

Now: $12.88
Southeast Tool
Clamp-on Countersink, 16mm Dia for 5mm Drill, Southeast Tool CSP1605LH
Carbide tipped countersink clamps on to the spiral of a 5mm drill and cuts up to a 16mm countersink.…

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $16.01

Was:

Now: $12.88
Southeast Tool
Clamp-on Countersink, 16mm Dia for 4mm Drill, Southeast Tool CSP1604RH
Carbide tipped countersink clamps on to the spiral of a 4mm drill and cuts up to a 16mm countersink.…

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $16.01

Was:

Now: $12.88
Southeast Tool
Clamp-on Countersink, 16mm Dia for 4mm Drill, Southeast Tool CSP1604LH
Carbide tipped countersink clamps on to the spiral of a 4mm drill and cuts up to a 16mm countersink.…

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $16.01

Was:

Now: $12.88
Southeast Tool
Clamp-on Countersink, 5mm-10mm Dia for 5mm-10mm Drill, Southeast Tool CSH20510RH
Carbide tipped countersink clamps on to the spiral of a 5mm to 10mm drill and cuts up to a 5mm to 10…

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $17.52

Was:

Now: $14.07
Southeast Tool
Clamp-on Countersink, 5mm-10mm Dia for 5mm-10mm Drill, Southeast Tool CSH20510LH
Carbide tipped countersink clamps on to the spiral of a 5mm to 10mm drill and cuts up to a 5mm to 10…

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $17.52

Was:

Now: $14.07
Southeast Tool
Clamp-on Countersink, 11mm-12mm Dia for 11mm-12mm Drill, Southeast Tool CSH201112RH
Carbide tipped countersink clamps on to the spiral of a 11mm to 12mm drill and cuts up to a 11mm to …

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $17.52

Was:

Now: $14.07
Southeast Tool
Clamp-on Countersink, 11mm-12mm Dia for 11mm- 12mm Drill, Southeast Tool CSH201112LH
Carbide tipped countersink clamps on to the spiral of a 11mm to 12mm drill and cuts up to a 11mm to …

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $17.52

Was:

Now: $14.07
Triumph Twist Drill
Center Reamer/Countersink, 3-Flute, 1" Dia, Triumph 039464
Triumph 039464 - Center Reamer/Countersink, 3-Flute, 1in Dia., 82deg Point, 1/2in Shank, 3in Overall…

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $124.20

Was:

Now: $73.81
Triumph Twist Drill
Center Reamer/Countersink, 3-Flute, 3/4" Dia, Triumph 039420
Triumph 039420 - Center Reamer/Countersink, 3-Flute, 3/4in Dia., 82deg Point, 1/2in Shank, 2 5/8in O…

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $64.27

Was:

Now: $38.19
Triumph Twist Drill
Center Reamer/Countersink, 3-Flute, 5/8" Dia, Triumph 039419
Triumph 039419 - Center Reamer/Countersink, 3-Flute, 5/8in Dia., 82deg Point, 3/8in Shank, 2 1/4in O…

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $48.60

Was:

Now: $28.88
Triumph Twist Drill
Center Reamer/Countersink, 3-Flute, 1/2" Dia, Triumph 039418
Triumph 039418 - Center Reamer/Countersink, 3-Flute, 1/2in Dia., 82deg Point, 3/8in Shank, 2in Overa…

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $33.66

Was:

Now: $20.00
Triumph Twist Drill
Center Reamer/Countersink, 3-Flute, 3/8" Dia, Triumph 039417
Triumph 039417 - Center Reamer/Countersink, 3-Flute, 3/8in Dia., 82deg Point, 1/4in Shank, 1 3/4in O…

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $26.09

Was:

Now: $15.51
Triumph Twist Drill
Center Reamer/Countersink, 3-Flute, 1/4" Dia, Triumph 039416
Triumph 039416 - Center Reamer/Countersink, 3-Flute, 1/4in Dia., 82deg Point, 3/16in Shank, 1 1/2in …

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $22.08

Was:

Now: $13.11
Southeast Tool
Clamp-On Countersink, 1/2" Dia for 7/32" Drill, Southeast Tool SE18802
Countersink - Style No 8CT, 82deg Angle, (Countersink Flat Head Screws), Carbide Tipped - Southeast …

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $90.88

Was:

Now: $73.04
Southeast Tool
Clamp-On Countersink, 1/2" Dia for 3/16" Drill, Southeast Tool SE18801
Countersink - Style No 8CT, 82deg Angle, (Countersink Flat Head Screws), Carbide Tipped - Southeast …

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $90.88

Was:

Now: $73.04
Southeast Tool
Clamp-On Countersink, 7/16" Dia for 7/32" Drill, Southeast Tool SE188002
Countersink - Style No 8CT, 82deg Angle, (Countersink Flat Head Screws), Carbide Tipped - Southeast …

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $90.88

Was:

Now: $73.04
Southeast Tool
Clamp-On Countersink, 3/8" Dia for 3/16" Drill, Southeast Tool SE18800
Countersink - Style No 8CT, 82deg Angle, (Countersink Flat Head Screws), Carbide Tipped - Southeast …

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $90.88

Was:

Now: $73.04
Southeast Tool
Clamp-On Countersink, 1/2 OD, 5/16 ID, Southeast Tool SE144030
Countersink Drill, Adjustable - Style 4CT (for Flat Head Screws), Carbide Tipped - Southeast Tool SE…

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $83.56

Was:

Now: $67.14
Southeast Tool
Clamp-On Countersink, 1/2 OD, 1/4 ID, Southeast Tool SE14403
Countersink Drill, Adjustable - Style 4CT (for Flat Head Screws), Carbide Tipped - Southeast Tool SE…

MSRP:

Was:

Now: (Inc. Tax)

MSRP: $83.56

Was:

Now: $67.14