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 C5F50562 1/2X1/4 HEX SHANK 82° 5FL COUNTERSINK
SKU: AT-C5F50562
MPN: C5F50562
Alfa Tools C5F50562C 1/2 HEX SHANK 82° 5FL COUNTERSINK CARDED
SKU: AT-C5F50562C
MPN: C5F50562C
Alfa Tools C5F50563 5/8X1/4 HEX SHANK 82° 5FL COUNTERSINK
SKU: AT-C5F50563
MPN: C5F50563
Alfa Tools C5F50563C 5/8 HEX SHANK 82° 5FL COUNTERSINK CARDED
SKU: AT-C5F50563C
MPN: C5F50563C
Alfa Tools C5F50564 3/4X1/4 HEX SHANK 82° 5FL COUNTERSINK
SKU: AT-C5F50564
MPN: C5F50564
Alfa Tools C5F50564C 3/4 HEX SHANK 82° 5FL COUNTERSINK CARDED
SKU: AT-C5F50564C
MPN: C5F50564C
Alfa Tools C6F50547 1/4 X 1/4 HSS 82° 6 FLUTE COUNTERSINK
SKU: AT-C6F50547
MPN: C6F50547
Alfa Tools C6F50547A 1/4 X 1/4 HSS 60° 6 FLUTE COUNTERSINK
SKU: AT-C6F50547A
MPN: C6F50547A
Alfa Tools C6F50547B 1/4 X 1/4 HSS 90° 6 FLUTE COUNTERSINK
SKU: AT-C6F50547B
MPN: C6F50547B
Alfa Tools C6F50548 5/16 X 1/4 HSS 82° 6 FLUTE COUNTERSINK
SKU: AT-C6F50548
MPN: C6F50548
Alfa Tools C6F50548A 5/16 X 1/4 HSS 60° 6 FLUTE COUNTERSINK
SKU: AT-C6F50548A
MPN: C6F50548A
Alfa Tools C6F50548B 5/16 X 1/4 HSS 90° 6 FLUTE COUNTERSINK
SKU: AT-C6F50548B
MPN: C6F50548B
Alfa Tools C6F50549 3/8 X 1/4 HSS 82° 6 FLUTE COUNTERSINK
SKU: AT-C6F50549
MPN: C6F50549
Alfa Tools C6F50549A 3/8 X 1/4 HSS 60° 6 FLUTE COUNTERSINK
SKU: AT-C6F50549A
MPN: C6F50549A
Alfa Tools C6F50549B 3/8 X 1/4 HSS 90° 6 FLUTE COUNTERSINK
SKU: AT-C6F50549B
MPN: C6F50549B
Alfa Tools C6F50550 1/2 X 1/4 HSS 82° 6 FLUTE COUNTERSINK
SKU: AT-C6F50550
MPN: C6F50550
Alfa Tools C6F50550A 1/2 X 1/4 HSS 60° 6 FLUTE COUNTERSINK
SKU: AT-C6F50550A
MPN: C6F50550A
Alfa Tools C6F50550B 1/2 X 1/4 HSS 90° 6 FLUTE COUNTERSINK
SKU: AT-C6F50550B
MPN: C6F50550B
Alfa Tools C6F50551 5/8 X 1/2 HSS 82° 6 FLUTE COUNTERSINK
SKU: AT-C6F50551
MPN: C6F50551
Alfa Tools C6F50551A 5/8 X 1/2 HSS 60° 6 FLUTE COUNTERSINK
SKU: AT-C6F50551A
MPN: C6F50551A
Alfa Tools C6F50551B 5/8 X 1/2 HSS 90° 6 FLUTE COUNTERSINK
SKU: AT-C6F50551B
MPN: C6F50551B
Alfa Tools C6F50552 3/4 X 1/2 HSS 82° 6 FLUTE COUNTERSINK
SKU: AT-C6F50552
MPN: C6F50552
Alfa Tools C6F50552A 3/4 X 1/2 HSS 60° 6 FLUTE COUNTERSINK
SKU: AT-C6F50552A
MPN: C6F50552A