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Single Flute Countersinks

Single Flute Countersinks

Single flute high speed steel countersinks.
Standard included angles available: 60°, 82° (standard for imperial, or "inch"-sized flat-head screws), 90° (standard for metric flat-head screws), 100°.
Other angles are in stock. Please call for availability.
Quantity Price Model Description Size Cut Shank Shank Length Overall Length

$3.75 CT1FL-1/4-60
1/4" 60 deg HS 1 Flute Countersink 1/4" 1/4" 3/4" 1 1/2"

$4.30 CT1FL-5/16-60
5/16" 60 deg HS 1 Flute Countersink 5/16" 1/4" 3/4" 1 3/4"

$4.30 CT1FL-3/8-60
3/8" 60 deg HS 1 Flute Countersink 3/8" 1/4" 7/8" 1 3/4"

$5.25 CT1FL-1/2-60
1/2" 60 deg HS 1 Flute Countersink 1/2" 3/8" 1" 2"

$8.50 CT1FL-5/8-60
5/8" 60 deg HS 1 Flute Countersink 5/8" 3/8" 1" 2 1/4"

$10.90 CT1FL-3/4-60
3/4" 60 deg HS 1 Flute Countersink 3/4" 1/2" 1 1/4" 2 1/2"

$16.70 CT1FL-1-60
1" 60 deg HS 1 Flute Countersink 1" 1/2" 1 3/8" 3"

$25.50 CT1FL-1-1/4-60
1-1/4" 60 deg HS 1 Flute Countersink 1-1/4" 3/4" 1 3/8" 3"

$39.50 CT1FL-1-1/2-60
1-1/2" 60 deg HS 1 Flute Countersink 1-1/2" 3/4" 1 5/8" 3 5/8"

$65.50 CT1FL-2-60
2" 60 deg HS 1 Flute Countersink 2" 3/4" 1 5/8" 4"

$3.75 CT1FL-1/4-82
1/4" 82 deg HS 1 Flute Countersink 1/4" 1/4" 3/4" 1 1/2"

$4.30 CT1FL-5/16-82
5/16" 82 deg HS 1 Flute Countersink 5/16" 1/4" 3/4" 1 3/4"

$4.30 CT1FL-3/8-82
3/8" 82 deg HS 1 Flute Countersink 3/8" 1/4" 7/8" 1 3/4"

$5.25 CT1FL-1/2-82
1/2" 82 deg HS 1 Flute Countersink 1/2" 1/4" 1" 2"

$8.50 CT1FL-5/8-82
5/8" 82 deg HS 1 Flute Countersink (1/2" Shank may be substituted) 5/8" 3/8" 1" 2 1/4"

$10.90 CT1FL-3/4-82
3/4" 82 deg HS 1 Flute Countersink 3/4" 1/2" 1 1/4" 2 1/2"

$16.70 CT1FL-1-82
1" 82 deg HS 1 Flute Countersink 1" 1/2" 1 3/8" 3"

$25.50 CT1FL-1-1/4-82
1-1/4" 82 deg HS 1 Flute Countersink 1-1/4" 3/4" 1 3/8" 3"

$39.50 CT1FL-1-1/2-82
1-1/2" 82 deg HS 1 Flute Countersink 1-1/2" 3/4" 1 5/8" 3 5/8"

$65.50 CT1FL-2-82
2" 82 deg HS 1 Flute Countersink 2" 3/4" 1 5/8" 4"

$3.75 CT1FL-1/4-90
1/4" 90 deg HS 1 Flute Countersink 1/4" 1/4" 3/4" 1 1/2"

$4.30 CT1FL-5/16-90
5/16" 90 deg HS 1 Flute Countersink 5/16" 1/4" 3/4" 1 3/4"

$4.30 CT1FL-3/8-90
3/8" 90 deg HS 1 Flute Countersink 3/8" 1/4" 7/8" 1 3/4"

$5.25 CT1FL-1/2-90
1/2" 90 deg HS 1 Flute Countersink 1/2" 3/8" 1" 2"

$8.50 CT1FL-5/8-90
5/8" 90 deg HS 1 Flute Countersink 5/8" 3/8" 1" 2 1/4"

$10.90 CT1FL-3/4-90
3/4" 90 deg HS 1 Flute Countersink 3/4" 1/2" 1 1/4" 2 1/2"

$16.70 CT1FL-1-90
1" 90 deg HS 1 Flute Countersink 1" 1/2" 1 3/8" 3"

$25.50 CT1FL-1-1/4-90
1-1/4" 90 deg HS 1 Flute Countersink 1-1/4" 3/4" 1 3/8" 3"

$39.50 CT1FL-1-1/2-90
1-1/2" 90 deg HS 1 Flute Countersink 1-1/2" 3/4" 1 5/8" 3 5/8"

$65.50 CT1FL-2-90
2" 90 deg HS 1 Flute Countersink 2" 3/4" 1 5/8" 4"

$4.20 CT1FL-1/4-100
1/4" 100 deg HS 1 Flute Countersink 1/4" 1/4" 3/4" 1 1/2"

$4.70 CT1FL-5/16-100
5/16" 100 deg HS 1 Flute Countersink 5/16" 1/4" 3/4" 1 3/4"

$4.70 CT1FL-3/8-100
3/8" 100 deg HS 1 Flute Countersink 3/8" 1/4" 7/8" 1 3/4"

$5.80 CT1FL-1/2-100
1/2" 100 deg HS 1 Flute Countersink 1/2" 3/8" 1" 2"

$9.00 CT1FL-5/8-100
5/8" 100 deg HS 1 Flute Countersink 5/8" 3/8" 1" 2 1/4"

$11.80 CT1FL-3/4-100
3/4" 100 deg HS 1 Flute Countersink 3/4" 1/2" 1 1/4" 2 1/2"

$18.40 CT1FL-1-100
1" 100 deg HS 1 Flute Countersink 1" 1/2" 1 3/8" 3"

$28.00 CT1FL-1-1/4-100
1-1/4" 100 deg HS 1 Flute Countersink 1-1/4" 3/4" 1 3/8" 3"

$43.50 CT1FL-1-1/2-100
1-1/2" 100 deg HS 1 Flute Countersink 1-1/2" 3/4" 1 5/8" 3 5/8"

$73.20 CT1FL-2-100
2" 100 deg HS 1 Flute Countersink 2" 3/4" 1 5/8" 4"