21/64" Drill Bits | McMaster-Carr

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System of Measurement

Drill Bit Size

0.35 mm to 2.5 mm (Increments of 0.05 mm)

1", 1 1/32", 1 1/16", 1 1/8", 1 5/32", 1 3/16", 1 1/4", 1 5/16", 1 3/8", 1 7/16", 1 1/2"

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 6.9 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")

2.6 mm to 10.0 mm (Increments of 0.1 mm)

6.0 mm to 10.0 mm (Increments of 0.1 mm)

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

33/64" to 63/64" (Increments of 1/64")

Length Class

For Use On

Finish

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Nitride (TiN) Coated

Drill Bit Point Type

Overall Length

Shank Size

Material

Point Angle

Shank Type

Flute Direction

Decimal Size Equivalent

Sold As

Flute Type

Maximum Drilling Depth

Thread Size

Bit Style

Number of Flutes

REACH

Compliant

Not Compliant

RoHS

Compliant

Compliant with Exemptions

Not Compliant

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

Export Control Classification Number (ECCN)

EAR99

For Drill Bit Size Decimal Equivalent

Length

Specifications Met

71 Products

Fabricating and Machining

Drill Bits

Create holes in metal, wood, plastic, concrete, and more

58 products

Drill Bit Guides

Drill precise holes without building a fixture

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

1 product

Fastening and Joining

Threaded Inserts

Create new threads or repair stripped threads

9 products

Raw Materials

Steel

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

1 product