118° Drill Bits | McMaster-Carr

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	For Drilling Type For Drilling Type

Hammer and Rotary

Rotary Only

	Specifications Met Specifications Met

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	Container Type Container Type

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Drill Bit Decimal Size Equivalents

About Drill Bits

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

Chip-Clearing Drill Bits

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

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

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.

Extended-Length Carbide-Tipped 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.

Nonsparking Drill Bits

Drill safely in flammable environments. Made of Factory Mutual (FM) approved beryllium copper, these bits won’t create sparks that could ignite if they made contact with combustible vapors or residues.

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.

High-Speed Steel 3/4" Diameter
Reduced-Shank Drill Bits

Use these bits for general purpose drilling in most material.

1/4" Diameter Reduced-Shank Drill Bits

High-Speed Steel Morse Taper-Shank Drill Bits

Use these bits for general purpose drilling in most material.

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.

SDS-Plus-Shank Masonry Drill Bits for Rotary Hammers

The SDS-Plus shank has two deep slots and two shallow slots for use with SDS-Plus-drive rotary hammers.

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.

Tapered-Round-Shank Masonry
Drill Bits for Rotary Hammers

Also known as A-taper bits, these fit rotary hammers with a taper-shank chuck.

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.

Round-Shank Masonry Drill Bits
for Tapping Screw Installation

Use these bits with handheld power drills, drill presses, and hammer drills.

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 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.

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.

High-Speed Steel Left-Hand Drill Bits

Use for drilling in most metal.

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.

Drill Bits for Countersunk Holes

Hex-Shank Drill Bits with Guide for Countersunk Holes

Insert directly into power screwdrivers, impact drivers, and other tools that accept a 1/4" hex shank.

Round-Shank Drill Bits with
Guide for Countersunk Holes

The built-in guide has a beveled tip that fits into countersunk holes in hardware, such as hinges and latches, to center the bit.

Drill Bit Sets

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

Short-Length Drill Bit Sets

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

Carbide Drill Bit Sets

For the highest accuracy and longest tool life, these solid-carbide bits are harder, stronger, and more wear resistant than high-speed steel, cobalt steel, and carbide-tipped bits.

Carbide-Tipped 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.

1/4" Diameter Reduced-Shank Drill Bit Sets

3/8" Diameter Reduced-Shank Drill Bit Sets

Round- and Hex-Shank Masonry
Drill Bit Sets for Hammer Drills

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

SDS-Plus-Shank Masonry Drill
Bit Sets for Rotary Hammers

The SDS-Plus shank has two deep slots and two shallow slots for use with SDS-Plus-drive rotary hammers.

Round-Shank Masonry Drill
Bit Sets for Rotary Hammers

Chip-Clearing Round-Shank Masonry
Drill Bit Sets for Rotary Hammers

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

Left-Hand Drill Bit Sets

Also known as reverse-flute bits, the flutes spiral in the opposite direction of other bits. Use in counterclockwise drilling applications such as removing broken screws.

Finger Drill Bit Sets

Drill small holes by hand.

Countersinking Drill Bits

Countersinking Drill Bits for Screws

Also known as step drill bits. The 82° countersink angle is compatible with the profile of flat- and oval-head inch screws.

Countersinking Drill Bits for Taps

Also called subland drill bits. The 90° countersink angle guides the tap into the hole.

Counterboring Drill Bits

Often called step drill bits.

Long-Life Counterboring Drill Bits

Also known as subland drill bits, these last longer than standard counterboring drill bits because the diameter stays the same after sharpening.

Oversized Long-Life Counterboring Drill Bits

Often used with screw holes in misaligned sheets or layers of material.

Combination Drill Bit/Round-Shank Reamers for Taper-Pin Holes

Inch Size Combination Drill Bit/Round-Shank
Reamers for Taper-Pin Holes

Drill and ream holes for tapered pins with the same tool. They are for use in drill presses, turret lathes, screw machines, and other machine tools.

Metric Size Combination Drill Bit/Round-Shank
Reamers for Taper-Pin Holes

Available in metric sizes, these tools let you drill and ream holes with the same tool. They are for use in drill presses, turret lathes, screw machines, and other machine tools.

Drill Bit Decimal Size Equivalents