43 ga Drill Bits | McMaster-Carr

Filter by

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")

System of Measurement

Length Class

Decimal Size Equivalent

For Use On

Finish

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Nitride (TiN) Coated

Drill Bit Point Type

Point Angle

Material

Shank Size

Thread Size

Maximum Drilling Depth

Flute Direction

Shank Type

Flute Type

Overall Length

Sold As

For Drill Bit Size Decimal Equivalent

Number of Flutes

Specifications Met

ASME B94.11M

DIN 6537L

NAS

DFARS Specialty Metals

Compliant

Exempt

Export Control Classification Number (ECCN)

RoHS

REACH

Height

Bit Style

39 Products

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

8 products

Cobalt Steel Drill Bits

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

4 products

Carbide Drill Bits

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

2 products

Chip-Clearing High-Speed Steel Drill Bits

Prevent clogs and dissipate heat when drilling most metals

4 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

1 product

Short-Flute High-Speed Steel Drill Bits

The rigidity of short-length bits without sacrificing reach

2 products

Short-Flute Cobalt Steel Drill Bits

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

2 products

Carbide Drill Bits for Hardened Steel

The hardest and most wear-resistant bits handle the heavy pressure needed to penetrate hardened steel

2 products

Expanded-Shank Carbide Drill Bits

Make small holes using standard-size tools

3 products

Left-Hand High-Speed Steel Drill Bits

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

1 product

Carbide Drill Bits for Carbon Fiber, Fiberglass, and Graphite

Drill abrasive materials cleanly

1 product

Other Products

Drill Bit Guides

Drill precise holes without building a fixture

1 product

Drill Taps

Drill and thread holes with the same bit

3 products

Drill Bit Size Gauges

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

1 product

Drill Stops

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

1 product

Drill Bit Extensions

Expand the reach of drill bits to get into deep and hard-to-reach spots

2 products

Steel

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

1 product