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 CSF50525 1/2 X 1/4 HSS 82° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50525
MPN: CSF50525
Alfa Tools CSF50525A 1/2 X 1/4 HSS 60° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50525A
MPN: CSF50525A
Alfa Tools CSF50525B 1/2 X 1/4 HSS 90° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50525B
MPN: CSF50525B
Alfa Tools CSF50525C 1/2 X 1/4 HSS 100° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50525C
MPN: CSF50525C
Alfa Tools CSF50525CD 1/2 X 1/4 HSS 82° SINGLE FLUTE COUNTERSINK CARDED
SKU: AT-CSF50525CD
MPN: CSF50525CD
Alfa Tools CSF50526 5/8 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50526
MPN: CSF50526
Alfa Tools CSF50526A 5/8 X 1/2 HSS 60° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50526A
MPN: CSF50526A
Alfa Tools CSF50526B 5/8 X 1/2 HSS 90° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50526B
MPN: CSF50526B
Alfa Tools CSF50526C 5/8 X 1/2 HSS 100° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50526C
MPN: CSF50526C
Alfa Tools CSF50526CD 5/8 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK CARDED
SKU: AT-CSF50526CD
MPN: CSF50526CD
Alfa Tools CSF50527 3/4 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50527
MPN: CSF50527
Alfa Tools CSF50527A 3/4 X 1/2 HSS 60° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50527A
MPN: CSF50527A
Alfa Tools CSF50527B 3/4 X 1/2 HSS 90° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50527B
MPN: CSF50527B
Alfa Tools CSF50527C 3/4 X 1/2 HSS 100° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50527C
MPN: CSF50527C
Alfa Tools CSF50527CD 3/4 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK CARDED
SKU: AT-CSF50527CD
MPN: CSF50527CD
Alfa Tools CSF50528 7/8 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50528
MPN: CSF50528
Alfa Tools CSF50528A 7/8 X 1/2 HSS 60° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50528A
MPN: CSF50528A
Alfa Tools CSF50528B 7/8 X 1/2 HSS 90° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50528B
MPN: CSF50528B
Alfa Tools CSF50528C 7/8 X 1/2 HSS 100° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50528C
MPN: CSF50528C
Alfa Tools CSF50529 1 X 1/2 HSS 82° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50529
MPN: CSF50529
Alfa Tools CSF50529A 1 X 1/2 HSS 60° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50529A
MPN: CSF50529A
Alfa Tools CSF50529B 1 X 1/2 HSS 90° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50529B
MPN: CSF50529B
Alfa Tools CSF50529C 1 X 1/2 HSS 100° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50529C
MPN: CSF50529C
Alfa Tools CSF50530 1-1/4 X 3/4 HSS 82° SINGLE FLUTE COUNTERSINK
SKU: AT-CSF50530
MPN: CSF50530