AT Combined Drill & Countersinks
AT combined drill countersinks—often called drill countersink bits or combination drill & countersink tools—are designed to streamline hole preparation by drilling a pilot hole and creating a chamfer/countersink in one operation (application dependent). They’re commonly used in fabrication and maintenance work to help reduce tool changes and produce cleaner, more consistent hole edges for fasteners, rivets, and general deburring.
Alfa Tools CD50471 ASA # 1 X 3 HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CD50471
MPN: CD50471
Alfa Tools CD50472 ASA # 1 X 4 HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CD50472
MPN: CD50472
Alfa Tools CD50473 ASA # 2 X 4 HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CD50473
MPN: CD50473
Alfa Tools CD50474 ASA # 2 X 5 HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CD50474
MPN: CD50474
Alfa Tools CD50475 ASA # 3 X 4 HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CD50475
MPN: CD50475
Alfa Tools CD50476 ASA # 3 X 5 HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CD50476
MPN: CD50476
Alfa Tools CD50477 ASA # 4 X 4 HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CD50477
MPN: CD50477
Alfa Tools CD50478 ASA # 4 X 5 HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CD50478
MPN: CD50478
Alfa Tools CD50479 ASA # 4 X 6 HSS COMBINED DRILL & COUNTERSING - Std Qty Pack 12
SKU: AT-CD50479
MPN: CD50479
Alfa Tools CD50480 ASA # 5 X 5 HSS COMBINED DRILL & COUNTERSINK
SKU: AT-CD50480
MPN: CD50480
Alfa Tools CDCK50448 #000 COBALT USA COMBINED DRILL & COUNTERSINK
SKU: AT-CDCK50448
MPN: CDCK50448
Alfa Tools CDCK50449 #00 COBALT USA COMBINED DRILL & COUNTERSINK
SKU: AT-CDCK50449
MPN: CDCK50449
Alfa Tools CDCK50450 #0 COBALT USA COMBINED DRILL & COUNTERSINK
SKU: AT-CDCK50450
MPN: CDCK50450
Alfa Tools CDCK50451 #1 COBALT USA COMBINED DRILL & COUNTERSINK
SKU: AT-CDCK50451
MPN: CDCK50451
Alfa Tools CDCK50452 #2 COBALT USA COMBINED DRILL & COUNTERSINK
SKU: AT-CDCK50452
MPN: CDCK50452
Alfa Tools CDCK50453 #3 COBALT USA COMBINED DRILL & COUNTERSINK
SKU: AT-CDCK50453
MPN: CDCK50453
Alfa Tools CDCK50454 #4 COBALT USA COMBINED DRILL & COUNTERSINK
SKU: AT-CDCK50454
MPN: CDCK50454
Alfa Tools CDCK50455 #5 COBALT USA COMBINED DRILL & COUNTERSINK
SKU: AT-CDCK50455
MPN: CDCK50455
Alfa Tools CDCK50456 #6 COBALT USA COMBINED DRILL & COUNTERSINK
SKU: AT-CDCK50456
MPN: CDCK50456
Alfa Tools CDCK50457 #7 COBALT USA COMBINED DRILL & COUNTERSINK
SKU: AT-CDCK50457
MPN: CDCK50457
Alfa Tools CDCK50458 #8 COBALT USA COMBINED DRILL & COUNTERSINK
SKU: AT-CDCK50458
MPN: CDCK50458
Alfa Tools CDH50448 ASA #000 HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CDH50448
MPN: CDH50448
Alfa Tools CDH50449 ASA #00 HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CDH50449
MPN: CDH50449
Alfa Tools CDH50450 ASA #0 HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CDH50450
MPN: CDH50450