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 AV4255735 5/8 Size-3/8 Shank-100° Single Flute Countersink
SKU: FTS-AV4255735
MPN: 919-000-979
Keo AV4255737 1 Size-1/2 Shank-100° Single Flute Countersink
SKU: FTS-AV4255737
MPN: 919-000-983
Keo AV4255740 1/8 × 60 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255740
MPN: 917-000-301
Keo AV4255741 3/16 × 60 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255741
MPN: 917-000-303
Keo AV4255741TIALN 3/16 × 60 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255741TIALN
MPN: 917-000-304
Keo AV4255742 1/4 × 60 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255742
MPN: 917-000-305
Keo AV4255742TIALN 1/4 × 60 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255742TIALN
MPN: 917-000-306
Keo AV4255743 3/8 × 60 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255743
MPN: 917-000-307
Keo AV4255743TIALN 3/8 × 60 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255743TIALN
MPN: 917-000-308
Keo AV4255744 1/2 × 60 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255744
MPN: 917-000-309
Keo AV4255745 5/8 × 60 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255745
MPN: 917-000-311
Keo AV4255746 3/4 × 60 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255746
MPN: 917-000-313
Keo AV4255746TIALN 3/4 × 60 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255746TIALN
MPN: 917-000-314
Keo AV4255747 1 × 60 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255747
MPN: 917-000-315
Keo AV4255747TIALN 1 × 60 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255747TIALN
MPN: 917-000-316
Keo AV4255748 1 1/4 × 60 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255748
MPN: 917-000-317
Keo AV4255748TIALN 1 1/4 × 60 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255748TIALN
MPN: 917-000-318
Keo AV4255749 5 PC SET 60 DEG 3FL CARB CSINK
SKU: FTS-AV4255749
MPN: 917-000-319
Keo AV4255750 1/8 × 82 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255750
MPN: 917-000-321
Keo AV4255750TIALN 1/8 × 82 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255750TIALN
MPN: 917-000-322
Keo AV4255751 3/16 × 82 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255751
MPN: 917-000-323
Keo AV4255752 1/4 × 82 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255752
MPN: 917-000-325
Keo AV4255753 3/8 × 82 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255753
MPN: 917-000-327
Keo AV4255753TIALN 3/8 × 82 DEG 3FL CARBIDE C/SINK
SKU: FTS-AV4255753TIALN
MPN: 917-000-328