4.2 mm 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")

For Use On

Length Class

Material

Drill Bit Point Type

Finish

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Nitride (TiN) Coated

Uncoated

Decimal Size Equivalent

Shank Type

Point Angle

Maximum Drilling Depth

Flute Direction

Shank Size

Flute Type

Overall Length

For Drill Bit Size Decimal Equivalent

Thread Size

Sold As

Individual

Number of Flutes

Thread Type

Thread Pitch

Bit Style

DFARS Specialty Metals

Compliant

Exempt

Export Control Classification Number (ECCN)

REACH

RoHS

Compliant with Exemptions

Not Compliant

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33 Products

Fabricating and Machining

Drill Bits

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

21 products

Drill Bit Guides

Drill precise holes without building a fixture

1 product

Drill Taps

Drill and thread holes with the same bit

4 products

Taps

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

1 product

Raw Materials

Steel

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

1 product

Fastening and Joining

Threaded Inserts

Create new threads or repair stripped threads

5 products