IS Countersinks
Freer Tool & Supply’s IS countersinks collection helps you create clean chamfers and precise countersunk holes for flat head screws and finishing work. Countersinks are commonly used to deburr drilled holes, improve fastener seating, and produce a smooth, professional edge—reducing burr-related assembly issues and improving part appearance in machining and fabrication.
ProCut BB51MC860 1/2" Size-1/2" Shank-60° 4 Flute Machine Countersink
SKU: FTS-BB51MC860
MPN: MC860
ProCut BB51MC882 1/2" Size-1/2" Shank-82° 4 Flute Machine Countersink
SKU: FTS-BB51MC882
MPN: MC882
ProCut BB51MC890 1/2" Size-1/2" Shank-90° 4 Flute Machine Countersink
SKU: FTS-BB51MC890
MPN: MC890
ProCut BB61544060 1/16 to 15/64" Dia Range-60°-0 FL Pilotless Countersink
SKU: FTS-BB61544060
MPN: 544060
ProCut BB61544082 1/16 to 15/64" Dia Range-82°-0 FL Pilotless Countersink
SKU: FTS-BB61544082
MPN: 544082
ProCut BB61544090 1/16 to 15/64" Dia Range-90°-0 FL Pilotless Countersink
SKU: FTS-BB61544090
MPN: 544090
ProCut BB61544160 5/32 to 13/32" Dia Range-60°-0 FL Pilotless Countersink
SKU: FTS-BB61544160
MPN: 544160
ProCut BB61544182 5/32 to 13/32" Dia Range-82°-0 FL Pilotless Countersink
SKU: FTS-BB61544182
MPN: 544182
ProCut BB61544190 5/32 to 13/32" Dia Range-90°-0 FL Pilotless Countersink
SKU: FTS-BB61544190
MPN: 544190
ProCut BB61544260 3/16 to 17/32" Dia Range-60°-0 FL Pilotless Countersink
SKU: FTS-BB61544260
MPN: 544260
ProCut BB61544282 3/16 to 17/32" Dia Range-82°-0 FL Pilotless Countersink
SKU: FTS-BB61544282
MPN: 544282
ProCut BB61544290 3/16 to 17/32" Dia Range-90°-0 FL Pilotless Countersink
SKU: FTS-BB61544290
MPN: 544290
ProCut BB61544360 5/16 to 25/32" Dia Range-60°-0 FL Pilotless Countersink
SKU: FTS-BB61544360
MPN: 544360
ProCut BB61544382 5/16 to 25/32" Dia Range-82°-0 FL Pilotless Countersink
SKU: FTS-BB61544382
MPN: 544382
ProCut BB61544390 5/16 to 25/32" Dia Range-90°-0 FL Pilotless Countersink
SKU: FTS-BB61544390
MPN: 544390
ProCut BB61544460 9/16 to 11/16" Dia Range-60°-0 FL Pilotless Countersink
SKU: FTS-BB61544460
MPN: 544460
ProCut BB61544482 9/16 to 11/16" Dia Range-82°-0 FL Pilotless Countersink
SKU: FTS-BB61544482
MPN: 544482
ProCut BB61544490 9/16 to 11/16" Dia Range-90°-0 FL Pilotless Countersink
SKU: FTS-BB61544490
MPN: 544490
ProCut BB61544560 5/8 to 1-15/32" Dia Range-60°-0 FL Pilotless Countersink
SKU: FTS-BB61544560
MPN: 544560
ProCut BB61544582 5/8 to 1-15/32" Dia Range-82°-0 FL Pilotless Countersink
SKU: FTS-BB61544582
MPN: 544582
ProCut BB61544660 3/4 to 1-3/4" Dia Range-60°-0 FL Pilotless Countersink
SKU: FTS-BB61544660
MPN: 544660
ProCut BB61544682 3/4 to 1-3/4" Dia Range-82°-0 FL Pilotless Countersink
SKU: FTS-BB61544682
MPN: 544682
ProCut BB61544690 3/4 to 1-3/4" Dia Range-90°-0 FL Pilotless Countersink
SKU: FTS-BB61544690
MPN: 544690