1/2" Shank Size Drill Bits

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517 Products

About Drill Bits

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

Drill Bits

These jobbers'-length bits have the rigidity and length required for most applications.

Short-Length Drill Bits

Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than jobbers'- and maintenance-length drill bits.

Extended-Length Drill Bits

Short-Flute Extended-Length Drill Bits

The short flutes provide increased rigidity for drilling straighter holes than standard extended-length drill bits.

Maintenance-Length Drill Bits

Also known as mechanics' bits, these are shorter and more rigid than jobbers’ bits but longer than short‐length bits.

Chip-Clearing Drill Bits

These jobbers'-length bits have the rigidity and length required for most applications.

Extended-Length Chip-Clearing Drill Bits

Drill Bits for Precise Holes

Specially-designed flutes keep these bits centered as they drill, resulting in straighter, rounder holes with tighter tolerances. Also known as double-margin drill bits.

Cobalt Steel Drill Bits

Short-Flute Cobalt Steel Drill Bits

The short flutes on these jobbers'-length bits provide increased rigidity for drilling straighter holes.

Short-Length Cobalt Steel Drill Bits

Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than jobbers'-length drill bits.

Extended-Length Cobalt Steel Drill Bits

Chip-Clearing Cobalt Steel Drill Bits

The parabolic spiral flutes lift chips out of the hole, reducing clogging and improving coolant flow.

Carbide Drill Bits

These jobbers'-length bits have the rigidity and length required for most applications.

Short-Length Carbide Drill Bits

Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than jobbers'-length drill bits.

Smooth-Finish Carbide Drill Bits

Three cutting edges instead of the typical two enable these bits to drill holes with a smoother finish than other bits.

Carbide Drill Bits with Coolant Holes

Holes in these bits allow coolant to be run through the tool for more efficient chip evacuation. Use them in CNC machines with coolant-through technology.

Carbide Drill Bits for Precise Holes

Specially-designed flutes keep these bits centered as they drill, resulting in straighter, rounder holes with tighter tolerances. Also known as double-margin drill bits.

Chip-Clearing Carbide Drill Bits

The parabolic spiral flutes lift chips out of the hole, reducing clogging and improving coolant flow.

Extended-Length Carbide-Tipped Drill Bits

Short-Flute Extended-Length
Carbide-Tipped Drill Bits

The short flutes provide increased rigidity for drilling straighter holes than standard extended-length drill bits.

Carbide-Tipped Drill Bits

These jobbers'-length bits have the rigidity and length required for most applications.

Short-Length Carbide-Tipped Drill Bits

Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than jobbers'-length drill bits.

1/2" Diameter Reduced-Shank Drill Bits

Extended-Length 1/2" Diameter
Reduced-Shank Drill Bits

Access hard-to-reach spots and drill deep holes.

Cobalt Steel 1/2" Diameter
Reduced-Shank Drill Bits

With better heat and wear resistance than high-speed steel, cobalt steel bits can run up to 25% faster and have a longer tool life.

Carbide-Tipped 1/2" Diameter
Reduced-Shank Drill Bits

More wear resistant than cobalt steel and high-speed steel, carbide-tipped bits maintain a sharper, harder edge at high temperatures for excellent performance on abrasive material, such as plastic. Because they aren’t as brittle as solid carbide bits, they can be used in less rigid setups, such as a hand-held drill.

Cobalt Steel Hex-Shank Drill Bits

In addition to resisting heat and wear better than high-speed steel drill bits, these can also run up to 25% faster and have a longer tool life. Insert them into power screwdrivers, impact drivers, and other tools that accept hex shanks.

Round- and Hex-Shank Masonry
Drill Bits for Hammer Drills

These bits have a round or hex shank that fits into the three-jaw chuck on a hammer drill.

Round- and Hex-Shank Masonry
Drill Bits for Rotary-Only Drilling

Chip-Clearing Round-Shank Masonry
Drill Bits for Rotary-Only Drilling

A more controlled chip removal reduces heat buildup. Use these bits on brittle material such as block and brick.

Hex-Shank Masonry Core Drill
Bits for Rotary-Only Drilling

These hollow bits cut with their outside edge for drilling holes larger than 1 1/2" in diameter.

Round-Shank Masonry Drill Bits for Rebar-Cutting

Use these bits with handheld power drills and hammer drills set to rotary-only mode.

Drill Bits for Precise Holes in Wood

Three sharp points allow these bits to drill accurate straight and overlapping holes, even across the grain. Also known as brad-point bits.

Fast-Cutting Smooth-Finish Drill Bits for Wood

Multiple outlining teeth bore clean, flat-bottom holes without chipping or splintering your surface—even when cutting across the grain. Also known as multispur bits.

Fast-Cutting Drill Bits for Wood

The screw point draws the bit in, quickly boring holes without applying pressure.

Carbide Drill Bits for Hardened Steel

Harder, stronger, and more wear resistant than carbide-tipped steel, solid-carbide bits maintain their sharp edges longer. They require rigid toolholding to prevent breakage and should not be used in hand-held drilling applications.

Carbide-Tipped Drill Bits for Hardened Steel

Carbide-tipped bits maintain their sharp edges when drilling hard material. They are for use in both hand-held drilling and machine-tool applications.

Drill Bits for Carbon Fiber, Fiberglass, and Graphite

These jobbers'-length bits have the rigidity and length required for most applications.

Short-Length Drill Bits for Carbon
Fiber, Fiberglass, and Graphite

Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than jobbers'-length drill bits.

Drill Bits for Plastic

The sharp point allows for gradual penetration to reduce friction and eliminate cracking and chipping when drilling in plastic.

Carbide Drill Bits for Sheet Metal

Harder, stronger, and more wear resistant than high-speed steel, solid-carbide bits maintain their sharp edges longer. They require rigid toolholding to prevent breakage and should not be used in hand-held drilling applications.

Drill Bits for Aluminum, Brass, and Bronze

Because softer metal, like aluminum, brass, and bronze, can clog a bit, the flutes on these bits lift chips out of the hole. Also known as slow-spiral drill bits.

Left-Hand Drill Bits

High-Speed Steel Left-Hand Drill Bits

Use for drilling in most metal.

Cobalt Steel Left-Hand Drill Bits

With better heat and wear resistance than high-speed steel, cobalt steel bits can run up to 25% faster and have a longer tool life.

High-Speed Steel Multidiameter Drill Bits

Use for drilling in most metal.

Hole-Starting Drill Bits

Carbide Hole-Starting Drill Bits

Harder, stronger, and more wear resistant than cobalt steel, solid-carbide bits maintain their sharp edges longer. They require rigid toolholding to prevent breakage and should not be used in hand-held drilling applications.

Cobalt Steel Hole-Starting Drill Bits

Cobalt steel bits are heat resistant and maintain their sharp edges when drilling hard material. They are for use in both hand-held drilling and machine-tool applications.

Drill Bits for Wire Installation

Unlike traditional wire-installing drill bits, you do not need to strip the end of the wire when using one of these bits. After drilling, insert the wire into the bit's hollow shaft and pull through the hole.

1/2" Diameter Reduced-Shank Drill Bit Sets

Cobalt Steel 1/2" Diameter
Reduced-Shank Drill Bit Sets

With better heat and wear resistance than high-speed steel, cobalt steel bits can run up to 25% faster and have a longer tool life.

High-Speed Steel 1/2" Diameter
Reduced-Shank Drill Bit Sets

Use these bits for general purpose drilling in most material.

Quick-Change Hole Saw Arbors with Pilot Drill Bit

A special collar on these arbors helps you quickly swap out tools. They connect your hole saw to a drill or drill press, and they include a pilot drill bit that centers your cut and guides the saw.

Drill Bits

Drill Bits

Short-Length Drill Bits

Extended-Length Drill Bits

Short-Flute Extended-Length Drill Bits

Maintenance-Length Drill Bits

Chip-Clearing Drill Bits

Extended-Length Chip-Clearing Drill Bits

Drill Bits for Precise Holes

Cobalt Steel Drill Bits

Short-Flute Cobalt Steel Drill Bits

Short-Length Cobalt Steel Drill Bits

Extended-Length Cobalt Steel Drill Bits

Chip-Clearing Cobalt Steel Drill Bits

Carbide Drill Bits

Short-Length Carbide Drill Bits

Smooth-Finish Carbide Drill Bits

Carbide Drill Bits with Coolant Holes

Carbide Drill Bits for Precise Holes

Chip-Clearing Carbide Drill Bits

Extended-Length Carbide-Tipped Drill Bits

Short-Flute Extended-LengthCarbide-Tipped Drill Bits

Carbide-Tipped Drill Bits

Short-Length Carbide-Tipped Drill Bits

1/2" Diameter Reduced-Shank Drill Bits

Extended-Length 1/2" DiameterReduced-Shank Drill Bits

Cobalt Steel 1/2" DiameterReduced-Shank Drill Bits

Carbide-Tipped 1/2" DiameterReduced-Shank Drill Bits

Cobalt Steel Hex-Shank Drill Bits

Round- and Hex-Shank MasonryDrill Bits for Hammer Drills

Round- and Hex-Shank MasonryDrill Bits for Rotary-Only Drilling

Chip-Clearing Round-Shank MasonryDrill Bits for Rotary-Only Drilling

Hex-Shank Masonry Core DrillBits for Rotary-Only Drilling

Round-Shank Masonry Drill Bits for Rebar-Cutting

Drill Bits for Precise Holes in Wood

Fast-Cutting Smooth-Finish Drill Bits for Wood

Fast-Cutting Drill Bits for Wood

Carbide Drill Bits for Hardened Steel

Carbide-Tipped Drill Bits for Hardened Steel

Drill Bits for Carbon Fiber, Fiberglass, and Graphite

Short-Length Drill Bits for CarbonFiber, Fiberglass, and Graphite

Drill Bits for Plastic

Carbide Drill Bits for Sheet Metal

Drill Bits for Aluminum, Brass, and Bronze

Left-Hand Drill Bits

High-Speed Steel Left-Hand Drill Bits

Cobalt Steel Left-Hand Drill Bits

High-Speed Steel Multidiameter Drill Bits

High-Speed Steel Multidiameter Drill Bits

Hole-Starting Drill Bits

Carbide Hole-Starting Drill Bits

Cobalt Steel Hole-Starting Drill Bits

Drill Bits for Wire Installation

Drill Bits for Wire Installation

1/2" Diameter Reduced-Shank Drill Bit Sets

Cobalt Steel 1/2" DiameterReduced-Shank Drill Bit Sets

High-Speed Steel 1/2" DiameterReduced-Shank Drill Bit Sets

Quick-Change Hole Saw Arbors with Pilot Drill Bit

Quick-Change Hole Saw Arbors with Pilot Drill Bit

Short-Flute Extended-Length
Carbide-Tipped Drill Bits

Extended-Length 1/2" Diameter
Reduced-Shank Drill Bits

Cobalt Steel 1/2" Diameter
Reduced-Shank Drill Bits

Carbide-Tipped 1/2" Diameter
Reduced-Shank Drill Bits

Round- and Hex-Shank Masonry
Drill Bits for Hammer Drills

Round- and Hex-Shank Masonry
Drill Bits for Rotary-Only Drilling

Chip-Clearing Round-Shank Masonry
Drill Bits for Rotary-Only Drilling

Hex-Shank Masonry Core Drill
Bits for Rotary-Only Drilling

Short-Length Drill Bits for Carbon
Fiber, Fiberglass, and Graphite

Cobalt Steel 1/2" Diameter
Reduced-Shank Drill Bit Sets

High-Speed Steel 1/2" Diameter
Reduced-Shank Drill Bit Sets