AT HSS Countersinks
AT HSS countersinks are cutting tools used to create a countersink (conical seat) or chamfer on drilled holes, and they’re also commonly used for deburring sharp edges after drilling (application dependent; verify per listing). In machining and fabrication, countersinks help prepare holes for flat-head fasteners and improve part finish by removing burrs that can interfere with assembly or inspection. High-speed steel (HSS) countersinks are a popular choice for general-purpose shop use, especially when you need a balance of toughness and cutting performance across a range of materials (application dependent).
Alfa Tools CSF50530A 1-1/4 X 3/4 HSS 60° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50530A
MPN: CSF50530A
Alfa Tools CSF50530B 1-1/4 X 3/4 HSS 90° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50530B
MPN: CSF50530B
Alfa Tools CSF50530C 1-1/4 X 3/4 HSS 100° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50530C
MPN: CSF50530C
Alfa Tools CSF50531 1-1/2 X 3/4 HSS 82° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50531
MPN: CSF50531
Alfa Tools CSF50531A 1-1/2 X 3/4 HSS 60° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50531A
MPN: CSF50531A
Alfa Tools CSF50531B 1-1/2 X 3/4 HSS 90° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50531B
MPN: CSF50531B
Alfa Tools CSF50531C 1-1/2 X 3/4 HSS 100° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50531C
MPN: CSF50531C
Alfa Tools CSF50532 2 X 3/4 HSS 82° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50532
MPN: CSF50532
Alfa Tools CSF50532A 2 X 3/4 HSS 60° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50532A
MPN: CSF50532A
Alfa Tools CSF50532B 2 X 3/4 HSS 90° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50532B
MPN: CSF50532B
Alfa Tools CSF50532C 2 X 3/4 HSS 100° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50532C
MPN: CSF50532C
Alfa Tools CSF50570 5PC SET 82° SG FLUTE COUNTERSINK 1/4-1"
SKU: AT-CSF50570
MPN: CSF50570
Alfa Tools CSF50570A 5PC SET 60° SG FLUTE COUNTERSINK 1/4-1"
SKU: AT-CSF50570A
MPN: CSF50570A
Alfa Tools CSF50570B 5PC SET 90° SG FLUTE COUNTERSINK 1/4-1"
SKU: AT-CSF50570B
MPN: CSF50570B
Alfa Tools CSF50570C 5PC SET 100° SG FLUTE COUNTERSINK 1/4-1"
SKU: AT-CSF50570C
MPN: CSF50570C
Alfa Tools CSF50571 9PC SET 82° SG FLUTE COUNTERSINK 3/16-1"
SKU: AT-CSF50571
MPN: CSF50571
Alfa Tools CSF50571A 9PC SET 60° SG FLUTE COUNTERSINK 3/16-1"
SKU: AT-CSF50571A
MPN: CSF50571A
Alfa Tools CSF50571B 9PC SET 90° SG FLUTE COUNTERSINK 3/16-1"
SKU: AT-CSF50571B
MPN: CSF50571B
Alfa Tools CSF50571C 9PC SET 100° SG FLUTE COUNTERSINK 3/16-1"
SKU: AT-CSF50571C
MPN: CSF50571C
Alfa Tools CSF50572 12PC SET 82° SG FLUTE CARBON STEEL 3/16-2"
SKU: AT-CSF50572
MPN: CSF50572
Alfa Tools CSF50572A 12PC SET 60° SG FLUTE COUNTERSINK 3/16-2"
SKU: AT-CSF50572A
MPN: CSF50572A
Alfa Tools CSF50572B 12PC SET 90° SG FLUTE COUNTERSINK 3/16-2"
SKU: AT-CSF50572B
MPN: CSF50572B
Alfa Tools CSF50572C 12PC SET 100° SG FLUTE COUNTERSINK 3/16-2
SKU: AT-CSF50572C
MPN: CSF50572C