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AT HSS Countersinks

AT hole enlarging core drills are designed to enlarge or open up existing holes in metalworking and industrial applications (application dependent). Unlike standard twist drills that start from solid material, core drills are commonly used when a hole is already present and you need to bring it to a larger diameter with improved control and efficiency—often in fabrication, maintenance, and repair work.

Alfa Tools CSF50531B 1-1/2 X 3/4 HSS 90° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50531B 1-1/2 X 3/4 HSS 90° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50531B
MPN: CSF50531B

Save $86.35
Alfa Tools CSF50531C 1-1/2 X 3/4 HSS 100° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50531C 1-1/2 X 3/4 HSS 100° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50531C
MPN: CSF50531C

Save $86.35
Alfa Tools CSF50532 2 X 3/4 HSS 82° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50532 2 X 3/4 HSS 82° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50532
MPN: CSF50532

Save $146.31
Alfa Tools CSF50532A 2 X 3/4 HSS 60° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50532A 2 X 3/4 HSS 60° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50532A
MPN: CSF50532A

Save $146.31
Alfa Tools CSF50532B 2 X 3/4 HSS 90° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50532B 2 X 3/4 HSS 90° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50532B
MPN: CSF50532B

Save $146.31
Alfa Tools CSF50532C 2 X 3/4 HSS 100° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50532C 2 X 3/4 HSS 100° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50532C
MPN: CSF50532C

Save $146.31
Alfa Tools CSF50570 5PC SET 82° SG FLUTE COUNTERSINK 1/4-1"

Alfa Tools CSF50570 5PC SET 82° SG FLUTE COUNTERSINK 1/4-1"

SKU: AT-CSF50570
MPN: CSF50570

Save $106
Alfa Tools CSF50570A 5PC SET 60° SG FLUTE COUNTERSINK 1/4-1"

Alfa Tools CSF50570A 5PC SET 60° SG FLUTE COUNTERSINK 1/4-1"

SKU: AT-CSF50570A
MPN: CSF50570A

Save $98.19
Alfa Tools CSF50570B 5PC SET 90° SG FLUTE COUNTERSINK 1/4-1"

Alfa Tools CSF50570B 5PC SET 90° SG FLUTE COUNTERSINK 1/4-1"

SKU: AT-CSF50570B
MPN: CSF50570B

Save $98.19
Alfa Tools CSF50570C 5PC SET 100° SG FLUTE COUNTERSINK 1/4-1"

Alfa Tools CSF50570C 5PC SET 100° SG FLUTE COUNTERSINK 1/4-1"

SKU: AT-CSF50570C
MPN: CSF50570C

Save $98.19
Alfa Tools CSF50571 9PC SET 82° SG FLUTE COUNTERSINK 3/16-1"

Alfa Tools CSF50571 9PC SET 82° SG FLUTE COUNTERSINK 3/16-1"

SKU: AT-CSF50571
MPN: CSF50571

Save $177.69
Alfa Tools CSF50571A 9PC SET 60° SG FLUTE COUNTERSINK 3/16-1"

Alfa Tools CSF50571A 9PC SET 60° SG FLUTE COUNTERSINK 3/16-1"

SKU: AT-CSF50571A
MPN: CSF50571A

Save $172.36
Alfa Tools CSF50571B 9PC SET 90° SG FLUTE COUNTERSINK 3/16-1"

Alfa Tools CSF50571B 9PC SET 90° SG FLUTE COUNTERSINK 3/16-1"

SKU: AT-CSF50571B
MPN: CSF50571B

Save $172.36
Alfa Tools CSF50571C 9PC SET 100° SG FLUTE COUNTERSINK 3/16-1"

Alfa Tools CSF50571C 9PC SET 100° SG FLUTE COUNTERSINK 3/16-1"

SKU: AT-CSF50571C
MPN: CSF50571C

Save $172.36
Alfa Tools CSF50572 12PC SET 82° SG FLUTE CARBON STEEL 3/16-2"

Alfa Tools CSF50572 12PC SET 82° SG FLUTE CARBON STEEL 3/16-2"

SKU: AT-CSF50572
MPN: CSF50572

Save $475.11
Alfa Tools CSF50572A 12PC SET 60° SG FLUTE COUNTERSINK 3/16-2"

Alfa Tools CSF50572A 12PC SET 60° SG FLUTE COUNTERSINK 3/16-2"

SKU: AT-CSF50572A
MPN: CSF50572A

Save $475.11
Alfa Tools CSF50572B 12PC SET 90° SG FLUTE COUNTERSINK 3/16-2"

Alfa Tools CSF50572B 12PC SET 90° SG FLUTE COUNTERSINK 3/16-2"

SKU: AT-CSF50572B
MPN: CSF50572B

Save $472.79
Alfa Tools CSF50572C 12PC SET 100° SG FLUTE COUNTERSINK 3/16-2

Alfa Tools CSF50572C 12PC SET 100° SG FLUTE COUNTERSINK 3/16-2

SKU: AT-CSF50572C
MPN: CSF50572C

Save $472.79