AT COUNTERSINKS

Alfa Tools countersinks provide the precision and clean finish required by machinists, fabricators, and woodworkers for professional fastener installation. Whether you’re countersinking for flathead screws, deburring holes, or creating chamfers, our extensive selection offers the exact angles and sizes needed for flush, high-quality results every time.


Alfa Tools C3F50533 1/4 X 3/16 HSS 82° 3 FLUTE COUNTERSINK

Alfa Tools C3F50533 1/4 X 3/16 HSS 82° 3 FLUTE COUNTERSINK

SKU: AT-C3F50533
MPN: C3F50533

Sale price $7.45 List price $14.85
Save $7.40
Alfa Tools C3F50533A 1/4 X 3/16 HSS 60° 3 FLUTE COUNTERSINK

Alfa Tools C3F50533A 1/4 X 3/16 HSS 60° 3 FLUTE COUNTERSINK

SKU: AT-C3F50533A
MPN: C3F50533A

Sale price $7.45 List price $14.85
Save $7.40
Alfa Tools C3F50533B 1/4 X 3/16 HSS 90° 3 FLUTE COUNTERSINK

Alfa Tools C3F50533B 1/4 X 3/16 HSS 90° 3 FLUTE COUNTERSINK

SKU: AT-C3F50533B
MPN: C3F50533B

Sale price $7.45 List price $14.85
Save $7.40
Alfa Tools C3F50534 3/8 X 1/4 HSS 82° 3 FLUTE COUNTERSINK

Alfa Tools C3F50534 3/8 X 1/4 HSS 82° 3 FLUTE COUNTERSINK

SKU: AT-C3F50534
MPN: C3F50534

Sale price $10.31 List price $20.56
Save $10.25
Alfa Tools C3F50534A 3/8 X 1/4 HSS 60° 3 FLUTE COUNTERSINK

Alfa Tools C3F50534A 3/8 X 1/4 HSS 60° 3 FLUTE COUNTERSINK

SKU: AT-C3F50534A
MPN: C3F50534A

Sale price $10.31 List price $20.56
Save $10.25
Alfa Tools C3F50534B 3/8 X 1/4 HSS 90° 3 FLUTE COUNTERSINK

Alfa Tools C3F50534B 3/8 X 1/4 HSS 90° 3 FLUTE COUNTERSINK

SKU: AT-C3F50534B
MPN: C3F50534B

Sale price $10.31 List price $20.56
Save $10.25
Alfa Tools C3F50535 1/2 X 3/8 HSS 82° 3 FLUTE COUNTERSINK

Alfa Tools C3F50535 1/2 X 3/8 HSS 82° 3 FLUTE COUNTERSINK

SKU: AT-C3F50535
MPN: C3F50535

Sale price $12.83 List price $25.59
Save $12.76
Alfa Tools C3F50535A 1/2 X 3/8 HSS 60° 3 FLUTE COUNTERSINK

Alfa Tools C3F50535A 1/2 X 3/8 HSS 60° 3 FLUTE COUNTERSINK

SKU: AT-C3F50535A
MPN: C3F50535A

Sale price $12.83 List price $25.59
Save $12.76
Alfa Tools C3F50535B 1/2 X 3/8 HSS 90° 3 FLUTE COUNTERSINK

Alfa Tools C3F50535B 1/2 X 3/8 HSS 90° 3 FLUTE COUNTERSINK

SKU: AT-C3F50535B
MPN: C3F50535B

Sale price $12.83 List price $25.59
Save $12.76
Alfa Tools C3F50536 5/8 X 3/8 HSS 82° 3 FLUTE COUNTERSINK

Alfa Tools C3F50536 5/8 X 3/8 HSS 82° 3 FLUTE COUNTERSINK

SKU: AT-C3F50536
MPN: C3F50536

Sale price $19.66 List price $39.22
Save $19.56
Alfa Tools C3F50536A 5/8 X 3/8 HSS 60° 3 FLUTE COUNTERSINK

Alfa Tools C3F50536A 5/8 X 3/8 HSS 60° 3 FLUTE COUNTERSINK

SKU: AT-C3F50536A
MPN: C3F50536A

Sale price $19.66 List price $39.22
Save $19.56
Alfa Tools C3F50536B 5/8 X 3/8 HSS 90° 3 FLUTE COUNTERSINK

Alfa Tools C3F50536B 5/8 X 3/8 HSS 90° 3 FLUTE COUNTERSINK

SKU: AT-C3F50536B
MPN: C3F50536B

Sale price $19.66 List price $39.22
Save $19.56
Alfa Tools C3F50537 3/4 X 1/2 HSS 82° 3 FLUTE COUNTERSINK

Alfa Tools C3F50537 3/4 X 1/2 HSS 82° 3 FLUTE COUNTERSINK

SKU: AT-C3F50537
MPN: C3F50537

Sale price $22.02 List price $43.93
Save $21.91
Alfa Tools C3F50537A 3/4 X 1/2 HSS 60° 3 FLUTE COUNTERSINK

Alfa Tools C3F50537A 3/4 X 1/2 HSS 60° 3 FLUTE COUNTERSINK

SKU: AT-C3F50537A
MPN: C3F50537A

Sale price $22.02 List price $43.93
Save $21.91
Alfa Tools C3F50537B 3/4 X 1/2 HSS 90° 3 FLUTE COUNTERSINK

Alfa Tools C3F50537B 3/4 X 1/2 HSS 90° 3 FLUTE COUNTERSINK

SKU: AT-C3F50537B
MPN: C3F50537B

Sale price $22.02 List price $43.93
Save $21.91
Alfa Tools C3F50538 1 X 1/2 HSS 82° 3 FLUTE COUNTERSINK

Alfa Tools C3F50538 1 X 1/2 HSS 82° 3 FLUTE COUNTERSINK

SKU: AT-C3F50538
MPN: C3F50538

Sale price $38.95 List price $77.70
Save $38.75
Alfa Tools C3F50538A 1 X 1/2 HSS 60° 3 FLUTE COUNTERSINK

Alfa Tools C3F50538A 1 X 1/2 HSS 60° 3 FLUTE COUNTERSINK

SKU: AT-C3F50538A
MPN: C3F50538A

Sale price $38.95 List price $77.70
Save $38.75
Alfa Tools C3F50538B 1 X 1/2 HSS 90° 3 FLUTE COUNTERSINK

Alfa Tools C3F50538B 1 X 1/2 HSS 90° 3 FLUTE COUNTERSINK

SKU: AT-C3F50538B
MPN: C3F50538B

Sale price $38.95 List price $77.70
Save $38.75
Alfa Tools C3F50539 1-1/4 X 3/4 HSS 82° 3FL.COUNTERSINK

Alfa Tools C3F50539 1-1/4 X 3/4 HSS 82° 3FL.COUNTERSINK

SKU: AT-C3F50539
MPN: C3F50539

Sale price $71.38 List price $142.39
Save $71.01
Alfa Tools C3F50539A 1-1/4 X 3/4 HSS 60° 3 FLUTE COUNTERSINK

Alfa Tools C3F50539A 1-1/4 X 3/4 HSS 60° 3 FLUTE COUNTERSINK

SKU: AT-C3F50539A
MPN: C3F50539A

Sale price $71.38 List price $142.39
Save $71.01
Alfa Tools C3F50539B 1-1/4 X 3/4 HSS 90° 3 FLUTE COUNTERSINK

Alfa Tools C3F50539B 1-1/4 X 3/4 HSS 90° 3 FLUTE COUNTERSINK

SKU: AT-C3F50539B
MPN: C3F50539B

Sale price $71.38 List price $142.39
Save $71.01
Alfa Tools C3F50540 1-1/2 X 3/4 HSS 82° 3 FLUTE COUNTERSINK

Alfa Tools C3F50540 1-1/2 X 3/4 HSS 82° 3 FLUTE COUNTERSINK

SKU: AT-C3F50540
MPN: C3F50540

Sale price $99.17 List price $197.84
Save $98.67
Alfa Tools C3F50540A 1-1/2 X 3/4 HSS 60° 3 FLUTE COUNTERSINK

Alfa Tools C3F50540A 1-1/2 X 3/4 HSS 60° 3 FLUTE COUNTERSINK

SKU: AT-C3F50540A
MPN: C3F50540A

Sale price $99.17 List price $197.84
Save $98.67
Alfa Tools C3F50540B 1-1/2 X 3/4 HSS 90° 3 FLUTE COUNTERSINK

Alfa Tools C3F50540B 1-1/2 X 3/4 HSS 90° 3 FLUTE COUNTERSINK

SKU: AT-C3F50540B
MPN: C3F50540B

Sale price $99.17 List price $197.84
Save $98.67