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 CDK50471 ASA# 1X3 ALFA USA HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CDK50471
MPN: CDK50471
Alfa Tools CDK50472 ASA# 1X4 ALFA USA HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CDK50472
MPN: CDK50472
Alfa Tools CDK50473 ASA# 2X4 ALFA USA HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CDK50473
MPN: CDK50473
Alfa Tools CDK50474 ASA# 2X5 ALFA USA HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CDK50474
MPN: CDK50474
Alfa Tools CDK50475 ASA# 3X4 ALFA USA HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CDK50475
MPN: CDK50475
Alfa Tools CDK50476 ASA# 3X5 ALFA USA HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CDK50476
MPN: CDK50476
Alfa Tools CDK50477 ASA# 4X4 ALFA USA HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CDK50477
MPN: CDK50477
Alfa Tools CDK50478 ASA# 4X5 ALFA USA HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CDK50478
MPN: CDK50478
Alfa Tools CDK50479 ASA# 4X6 ALFA USA HSS COMBINED DRILL & COUNTERSINK - Std Qty Pack 12
SKU: AT-CDK50479
MPN: CDK50479
Alfa Tools CDK50480 ASA# 5X5 ALFA USA HSS COMBINED DRILL & COUNTERSINK
SKU: AT-CDK50480
MPN: CDK50480
Alfa Tools CDK50481 ASA# 5X6 ALFA USA HSS COMBINED DRILL & COUNTERSINK
SKU: AT-CDK50481
MPN: CDK50481
Alfa Tools CDK50482 ASA# 6X5 ALFA USA HSS COMBINED DRILL & COUNTERSINK
SKU: AT-CDK50482
MPN: CDK50482
Alfa Tools CDK50483 ASA# 6X6 ALFA USA HSS COMBINED DRILL & COUNTERSINK
SKU: AT-CDK50483
MPN: CDK50483
Alfa Tools CDK50484 ASA# 7X6 ALFA USA HSS COMBINED DRILL & COUNTERSINK
SKU: AT-CDK50484
MPN: CDK50484