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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 CSF50526 5/8 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50526 5/8 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50526
MPN: CSF50526

Save $19.41
Alfa Tools CSF50526A 5/8 X 1/2 HSS 60° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50526A 5/8 X 1/2 HSS 60° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50526A
MPN: CSF50526A

Save $19.41
Alfa Tools CSF50526B 5/8 X 1/2 HSS 90° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50526B 5/8 X 1/2 HSS 90° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50526B
MPN: CSF50526B

Save $19.41
Alfa Tools CSF50526C 5/8 X 1/2 HSS 100° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50526C 5/8 X 1/2 HSS 100° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50526C
MPN: CSF50526C

Save $19.41
Alfa Tools CSF50526CD 5/8 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK CARDED

Alfa Tools CSF50526CD 5/8 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK CARDED

SKU: AT-CSF50526CD
MPN: CSF50526CD

Save $21.91
Alfa Tools CSF50527 3/4 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50527 3/4 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50527
MPN: CSF50527

Save $21.74
Alfa Tools CSF50527A 3/4 X 1/2 HSS 60° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50527A 3/4 X 1/2 HSS 60° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50527A
MPN: CSF50527A

Save $21.74
Alfa Tools CSF50527B 3/4 X 1/2 HSS 90° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50527B 3/4 X 1/2 HSS 90° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50527B
MPN: CSF50527B

Save $21.74
Alfa Tools CSF50527C 3/4 X 1/2 HSS 100° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50527C 3/4 X 1/2 HSS 100° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50527C
MPN: CSF50527C

Save $21.74
Alfa Tools CSF50527CD 3/4 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK CARDED

Alfa Tools CSF50527CD 3/4 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK CARDED

SKU: AT-CSF50527CD
MPN: CSF50527CD

Save $24.23
Alfa Tools CSF50528 7/8 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50528 7/8 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50528
MPN: CSF50528

Save $34.60
Alfa Tools CSF50528A 7/8 X 1/2 HSS 60° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50528A 7/8 X 1/2 HSS 60° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50528A
MPN: CSF50528A

Save $34.60
Alfa Tools CSF50528B 7/8 X 1/2 HSS 90° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50528B 7/8 X 1/2 HSS 90° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50528B
MPN: CSF50528B

Save $34.60
Alfa Tools CSF50528C 7/8 X 1/2 HSS 100° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50528C 7/8 X 1/2 HSS 100° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50528C
MPN: CSF50528C

Save $34.60
Alfa Tools CSF50529 1 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50529 1 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50529
MPN: CSF50529

Save $38.40
Alfa Tools CSF50529A 1 X 1/2 HSS 60° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50529A 1 X 1/2 HSS 60° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50529A
MPN: CSF50529A

Save $38.40
Alfa Tools CSF50529B 1 X 1/2 HSS 90° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50529B 1 X 1/2 HSS 90° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50529B
MPN: CSF50529B

Save $38.40
Alfa Tools CSF50529C 1 X 1/2 HSS 100° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50529C 1 X 1/2 HSS 100° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50529C
MPN: CSF50529C

Save $38.40
Alfa Tools CSF50530 1-1/4 X 3/4 HSS 82° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50530 1-1/4 X 3/4 HSS 82° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50530
MPN: CSF50530

Save $63.95
Alfa Tools CSF50530A 1-1/4 X 3/4 HSS 60° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50530A 1-1/4 X 3/4 HSS 60° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50530A
MPN: CSF50530A

Save $63.95
Alfa Tools CSF50530B 1-1/4 X 3/4 HSS 90° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50530B 1-1/4 X 3/4 HSS 90° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50530B
MPN: CSF50530B

Save $63.95
Alfa Tools CSF50530C 1-1/4 X 3/4 HSS 100° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50530C 1-1/4 X 3/4 HSS 100° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50530C
MPN: CSF50530C

Save $63.95
Alfa Tools CSF50531 1-1/2 X 3/4 HSS 82° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50531 1-1/2 X 3/4 HSS 82° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50531
MPN: CSF50531

Save $86.35
Alfa Tools CSF50531A 1-1/2 X 3/4 HSS 60° SINGLE FLUTE COUNTERSINK

Alfa Tools CSF50531A 1-1/2 X 3/4 HSS 60° SINGLE FLUTE COUNTERSINK

SKU: AT-CSF50531A
MPN: CSF50531A

Save $86.35