27/64" Drill Bits | McMaster-Carr

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System of Measurement

Drill Bit Size

1.0 mm to 10.0 mm (Increments of 0.5 mm)

1.0 mm to 13.0 mm (Increments of 0.5 mm)

1.0 mm to 5.9 mm (Increments of 0.1 mm)

1.0 mm to 7.0 mm (Increments of 0.5 mm)

1/16" to 1/2" (Increments of 1/64")

1/16" to 1/2" (increments of 1/32")

1/16" to 1/4" (Increments of 1/64")

1/16" to 3/8" (Increments of 1/64")

1/2" to 1" (Increments of 1/64")

1/64" to 1/4" (increments of 1/64")

6.0 mm to 10.0 mm (Increments of 0.1 mm)

9/16" to 1" (increments of 1/16")

For Use On

Length Class

Shank Type

Finish

Aluminum Titanium Nitride (AlTiN) Coated

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Nitride (TiN) Coated

Drill Bit Point Type

Material

Shank Size

Decimal Size Equivalent

Overall Length

Point Angle

Maximum Drilling Depth

Flute Direction

Flute Type

Sold As

Number of Flutes

Thread Size

Bit Style

Manufacturer

Scientific Cutting Tools

Ultra Tool

Viking Norseman Drill

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

RoHS

Compliant

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

Export Control Classification Number (ECCN)

EAR99

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92 Products

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About Drill Bits

Compare material, finish, length class, and decimal size equivalents.

Drill Bits

Sold Individually

High-Speed Steel Drill Bits

Cut holes in a variety of metals, from the softest aluminum to the hardest steel

18 products

Cobalt Steel Drill Bits

Tough and wear resistant to last at least twice as long as high-speed steel bits

7 products

Carbide Drill Bits

The hardest and most wear-resistant drill bits you can buy

4 products

Reduced-Shank High-Speed Steel Drill Bits

Make large holes using standard-size tools

2 products

Carbide-Tipped Drill Bits

Stronger than cobalt and high-speed steel, bits stay sharp at high temperatures

5 products

Carbide-Tipped Drill Bits for Hardened Steel

Straight flutes withstand the heavy pressure needed to penetrate hardened steel

1 product

Short-Flute High-Speed Steel Drill Bits

The rigidity of short-length bits without sacrificing reach

2 products

Chip-Clearing Cobalt Steel Drill Bits

Avoid clogs and dissipate heat with bits that last at least twice as long as high-speed steel

2 products

Left-Hand High-Speed Steel Drill Bits

Remove stripped screws with flutes that spiral in reverse from other bits

1 product

Chip-Clearing High-Speed Steel Drill Bits

Prevent clogs and dissipate heat when drilling most metals

5 products

Carbide Drill Bits for Carbon Fiber, Fiberglass, and Graphite

Drill abrasive materials cleanly

1 product

Smooth-Finish Carbide Drill Bits

More cutting edges for a consistent finish

1 product

Short-Flute Carbide-Tipped Drill Bits

Our strongest short-flute bits stay sharp when drilling abrasive materials, such as titanium

2 products

High-Speed Steel Drill Bits for Plastic

Penetrate gradually to prevent cracking and chipping

1 product

Short-Flute Cobalt Steel Drill Bits

Combine the toughness and wear resistance of cobalt with short flutes for rigidity

1 product

Chip-Clearing High-Speed Steel Drill Bits for Aluminum, Brass, and Bronze

Wide flutes clear chips from soft metals that can gum up other drill bits

1 product

Carbide Drill Bits for Port Counterbores

Rough out port holes to the right shape for your counterbore to finish

3 products

Impact Wrench High-Speed Steel Drill Bits

Cut holes twice as fast as a power drill

9 products

Sold as Sets

Impact Wrench High-Speed Steel Drill Bit Sets

Cut holes of different sizes twice as fast as a power drill

9 products

Other Products

Tap and Drill Bit Sets

Drill holes and cut internal threads in a variety of sizes

10 products

Cutting Tool Workbench Drawers

Mount under a workbench or shelf to store bits in labeled compartments

1 product

Drill Bit Size Gauges

Match your drill bit to one of the holes to confirm its size

1 product

Cutting Tool Cabinets

Organize and store cutting tools such as taps, drill bits, and end mills in labeled compartments

3 products

Drill Bit Guides

Drill precise holes without building a fixture

1 product

Steel

Strong, machinable, and weldable—all with material certificates for traceability

3 products

Drill Taps

Drill and thread holes with the same bit

13 products

Threaded Inserts

Create new threads or repair stripped threads

1 product

Drill Stops

Limit how far bits can drill to create identical hole depths every time

1 product

Taps

Cut internal threads for fasteners, pipe, conduit, and more

12 products

Tap, Drill Bit, and Reamer Sets

The fastest way to prepare holes with a hand tool

9 products