31 ga Drill Bits | McMaster-Carr

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System of Measurement

Drill Bit Size

5/8" to 1 3/16"

1 1/2" to 2 1/16"

80 Ga. to 61 Ga.

80 Ga. to 1 Ga.

60 Ga. to 1 Ga.

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")

Decimal Size Equivalent

Length Class

Finish

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Nitride (TiN) Coated

For Use On

Stainless Steel

Material

18-8 Stainless Steel

Carbide-Tipped Steel

Point Angle

Drill Bit Point Type

Shank Size

Overall Length

Maximum Drilling Depth

Sold As

Shank Type

Flute Direction

Bit Style

Flute Type

Number of Flutes

Specifications Met

DFARS Specialty Metals

Export Control Classification Number (ECCN)

REACH

RoHS

Compliant with Exemptions

Thread Size

Diameter

Tolerance Rating

How can we improve?

44 Products

Fabricating and Machining

Drill Bits

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

Drill Stops

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

Fastening and Joining

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Raw Materials

Steel

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

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)