Combined Drill & Countersink
Which material is right for your job?
Pick a family to narrow SKUs.
Carbide - Long Length
Carbide
Stiffest — resists point wander
Wants a rigid setup
Best for
Production centering, harder material
Cobalt
M42 — holds hardness under heat
Tougher than carbide under load
Best for
Stainless and tough alloys, sizes 1 to 4
HSS
Widest size range, 00000 to 8
Regular and long length
Best for
General lathe work and hole starting
Combined drill and countersink tools, also known as center drills, are used to create an accurate starting point and countersunk center for lathe work or precision hole starting ahead of a full-size drill. We stock these in Carbide, Cobalt, and HSS, with HSS available in both Regular Length and Long Length.
A clean, accurately placed center drill point prevents drill wander on the next operation, which matters most on tight-tolerance or deep-hole work. All combined drill and countersink tools are manufactured in the USA and stocked for same-day shipping.
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Compare SKU Vendor Size Drill Diameter (D1) Shank Diameter Body Diameter (D2) Overall Length (L1) Included Angle Number of Flutes Package Qty Coating In Stock Price Quantity A79066 ACT 1 X 4 3/64 1/8 4.0000 (4) 60° 1 Uncoated 35 $97.87 -
A79076 ACT 1 X 4 3/64 1/8 4.0000 (4) 60° 1 ALTiN 10 $107.12 -
A79067 ACT 2 X 4 5/64 3/16 4.0000 (4) 60° 1 Uncoated 4 $103.90 -
A79081 ACT 2 X 4 5/64 3/16 4.0000 (4) 60° 1 ALTiN 3 $114.25 -
A79068 ACT 3 X 4 7/64 1/4 4.0000 (4) 60° 1 Uncoated 84 $109.10 -
A79069 ACT 3 X 6 7/64 1/4 6.0000 (6) 60° 1 Uncoated 47 $119.73 -
A79082 ACT 3 X 4 7/64 1/4 4.0000 (4) 60° 1 ALTiN 16 $121.51 -
A79083 ACT 3 X 6 7/64 1/4 6.0000 (6) 60° 1 ALTiN 7 $134.21 -
A47025 ACT 5 3/64 7/16 2-3/4 60° 1 Uncoated 100 $78.18 -
A57832 ACT 5 3/64 7/16 2-3/4 60° 1 ALTiN 77 $93.02 -
A47026 ACT 6 3/64 1/2 3 60° 1 Uncoated 100 $112.85 -
A57833 ACT 6 3/64 1/2 3 60° 1 ALTiN 25 $133.74 -
A47140 ACT 7x6 3/64 5/8 6 60° 1 Uncoated 28 $81.76 -
A47141 ACT 8x6 3/64 3/4 6 60° 1 Uncoated 16 $98.87 -
A47082 ACT 8 3/64 3/4 3-1/2 60° 1 ALTiN 4 $73.27