IS Counterbore/Countersink
Freer Tool & Supply’s IS counterbore and countersink collection supports clean, accurate hole finishing and proper fastener seating in machining, fabrication, and assembly work. Counterbores create flat-bottom recesses for socket head and cap screws, while countersinks add the chamfer needed for flat head screws and smoother hole entrances—helping improve fit, alignment, and overall assembly quality.
Keo AV4255801 5 PC SET 82 DEG 6FL CARB CSINK
SKU: FTS-AV4255801
MPN: 919-001-032
Keo AV4255802 1/8 × 90 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255802
MPN: 919-001-034
Keo AV4255803 3/16 × 90 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255803
MPN: 919-001-036
Keo AV4255804 1/4 × 90 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255804
MPN: 919-001-038
Keo AV4255805 3/8 × 90 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255805
MPN: 919-001-040
Keo AV4255805TIALN 3/8 × 90 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255805TIALN
MPN: 919-001-041
Keo AV4255806 1/2 × 90 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255806
MPN: 919-001-042
Keo AV4255806TIALN 1/2 × 90 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255806TIALN
MPN: 919-001-043
Keo AV4255807 5/8 × 90 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255807
MPN: 919-001-044
Keo AV4255808 3/4 × 90 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255808
MPN: 919-001-046
Keo AV4255809 1 × 90 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255809
MPN: 919-001-048
Keo AV4255810 1 1/4 × 90 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255810
MPN: 919-001-050
Keo AV4255811 1 1/2 × 90 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255811
MPN: 919-001-052
Keo AV4255812 5 PC SET 90 DEG 6FL CARB CSINK
SKU: FTS-AV4255812
MPN: 919-001-054
Keo AV4255812TIALN 5 PC SET 90D 6FL CARB CSINK
SKU: FTS-AV4255812TIALN
MPN: 55812-TIALN
Keo AV4255813 1/8 × 100 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255813
MPN: 919-001-056
Keo AV4255813TIALN 1/8 × 100 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255813TIALN
MPN: 919-001-057
Keo AV4255814 3/16 × 100 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255814
MPN: 919-001-058
Keo AV4255814TIALN 3/16 × 100 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255814TIALN
MPN: 919-001-059
Keo AV4255815 1/4 × 100 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255815
MPN: 919-001-060
Keo AV4255815TIALN 1/4 × 100 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255815TIALN
MPN: 919-001-061
Keo AV4255816 3/8 × 100 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255816
MPN: 919-001-062
Keo AV4255816TIALN 3/8 × 100 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255816TIALN
MPN: 919-001-063
Keo AV4255817 1/2 × 100 DEG 6 FL CARBIDE C/SINK
SKU: FTS-AV4255817
MPN: 919-001-064