2" Drill Bits | McMaster-Carr

Cut large holes with drill presses and portable drills that have a standard-size chuck. The shank on these bits has a smaller diameter than the cutting tip. High-speed steel is good for general purpose drilling in most metals. Also known as Silver and Deming bits.

Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.

Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.

					Shank
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type		Each
Jobbers' Length







				Black Oxide

				2"	2"	6"	2.1"	Reduced Round	3/4"	Standard	8772A28	0000000

High-Speed Steel Drill Bits

Jobbers' Length

Morse Taper Shank

Standard

Our basic drill bits are also the most versatile. Cut holes in a variety of metals, from the softest aluminum to the hardest steel.

Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.

Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.

					Shank
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type		Each
Jobbers' Length







				Black Oxide

				2"	2"	16 5/8"	7.62"	Morse Taper	Morse 4	Standard	2929A517	0000000


				2"	2"	17 3/8"	7.37"	Morse Taper	Morse 5	Standard	2929A627	000000

Reduced-Shank Cobalt Steel Drill Bits


Jobbers' Length	Split

More wear resistant than high-speed steel, these bits cut large holes with tools that have a standard-size chuck. The shank has a smaller diameter than the cutting tip and fits drill presses and portable drills. Cobalt steel bits last at least twice as long as high-speed steel. They can also run up to 25% faster at higher temperatures without being damaged on hard materials such as nickel. Also known as Silver and Deming bits.

Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.

Uncoated—Polished to eject chips, these are also known as bright finish bits.

					Shank
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type		Each
Jobbers' Length







				Uncoated

				2"	2"	6"	3"	Reduced Round	3/4"	Split	8814A53	0000000

Fast-Cutting Smooth-Finish Drill Bits for Wood


Round Shank Standard Point	Quick-Change Hex Shank Screw Point

Not only do these bits bore holes faster than standard smooth-finish bits, they create less friction and heat buildup to last longer. The spurred teeth have a long life, but they're less effective at guiding the bit so cuts on angled and overlapping holes tend to be rougher. Also known as multispur bits.

Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.

	Max. Drilling Dp.	Shank Size	Drill Bit Point Type		Each
Black Oxide







	Quick-Change Hex Shank

	2"	2"	5 1/8"	—	7/16"	Screw	3188A17	000000


	Uncoated







					Round Shank

					2"	2"	6"	4"	1/2"	Standard	2890A37	00000

Rebar-Cutting Core Drill Bits for Concrete

Core out large holes in concrete, even if it's reinforced with rebar mesh. No need to switch bits, these have a diamond-coated edge that keeps on cutting and resists wear to stay sharp.

Threaded-Hub Shank for Rotary Only Drilling

Bits are designed for wet drilling on a drilling rig. To avoid damage to bits and tools, do not use for dry drilling or with portable drills or grinders.

	Max. Drilling Dp.	Shank Size	Thread Size	Bit ID		Each
Diamond Coated







	Standard Point

	2"	2"	16 1/4"	14.5"	2"	1 1/4"-7	1 3/4"	2872A55	0000000

Carbide-Tipped Core Drill Bits for Masonry and Concrete

Remove a core of material with these hollow bits to make larger holes than fluted masonry bits. They're often used for installing pipe and conduit through brick and concrete. The carbide tip resists wear and heat to stay sharp.

SDS-Max Shank for Hammer and Rotary Drilling


	SDS-Max Shank

The slotted shank is compatible with SDS-Max-drive rotary hammers. These bits use simultaneous rotary and hammering action to penetrate material. Also known as percussion or impact bits.

Pilot Drills—Cut a groove before drilling to make starting the hole easier.

	Drill Bits								Pilot Drills
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Specs. Met	Includes		Each		Each
Uncoated







				Standard Point

				2"	2"	12"	7"	ANSI B212.15	Core Ejector Key, Pilot Drill	88865A63	0000000	88865A97	000000


				2"	2"	22"	17"	ANSI B212.15	Core Ejector Key, Pilot Drill	88865A64	000000	88865A97	00000

Hex Shank for Rotary Only Drilling

The hex shape reduces the chance of the shank slipping in the chuck. Pair these bits with hand-held power drills and hammer drills set to rotary-only mode. Because they use rotary action only, they require more pressure to grind up material than other bits.

Pilot Drills—Cut a groove before drilling to make starting the hole easier.

	Drill Bits								Pilot Drills
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Shank Size	Specs. Met		Each		Each
Uncoated



		2"	2"	12"	10"	1/2"	ANSI B212.15	2942A43	0000000	2942A89	000000

Extensions

		Each
18" Extension for 1/2" Hex Shank Size	2942A62	000000

Smooth-Finish Drill Bits for Wood

Round Shank

Multiple teeth cut away large amounts of material to bore clean, flat-bottom holes in wood. The center guide point keeps the bit stable and centered for drilling straight, angled, and overlapping holes, like those used create joints. Also known as Forstner bits.

	Max. Drilling Dp.	Shank Size	Drill Bit Point Type		Each
Uncoated







	Round Shank

	2"	2"	3 1/2"	3"	13/32"	Standard	3216A35	000000

Extensions

		Each
5" Extension for 5/16" Shank Size	3216A71	000000
10" Extension for 5/16" Shank Size	3216A72	00000

Chip-Clearing Drill Bits for Wood

Quick-Change Hex Shank

Prevent clogs that wear the bit and slow down drilling. The flutes on these bits have an open design that pulls chips out of the hole faster than standard spiral flutes. Also known as pole or ship auger bits, they are used to cut deep holes through lumber, railroad ties, and utility poles.

Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.

	Max. Drilling Dp.	Shank Size	Drill Bit Point Type		Each
Black Oxide







	Quick-Change Hex Shank

	2"	2"	17"	12"	7/16"	Screw	2818A26	000000

Carbide-Tipped Smooth-Finish Drill Bits for Wood

Carbide-Tipped Steel

Carbide tipped to stay sharp longer than tool steel bits, these are better on tough and abrasive materials, such as plywood and hardwoods. They have multiple teeth that cut away large amounts of material to bore clean, flat-bottom holes in wood. The center guide point keeps the bit stable and centered for drilling straight, angled, and overlapping holes, like those used create joints. Also known as Forstner bits.

	Max. Drilling Dp.	Shank Size	Drill Bit Point Type		Each
Carbide Tipped/Uncoated







	Round Shank

	2"	2"	3 1/2"	3"	3/8"	Standard	8799A46	000000

Extensions

		Each
5" Extension for 5/16" Shank Size	3216A71	000000
10" Extension for 5/16" Shank Size	3216A72	00000

Changeable-Size Carbide-Tipped Core Drill Bits for Masonry and Concrete

Instead of investing in multiple bits, change the bit body to drill a different-sized hole. These hollow bits remove a large core of material from concrete, brick, and masonry for installing pipe and conduit. The carbide tip resists wear and heat to stay sharp. Bits include a pilot drill to make starting holes easier.

SDS-Max Shank for Hammer and Rotary Drilling


	SDS-Max Shank

The slotted shank is compatible with SDS-Max-drive rotary hammers. These bits use simultaneous rotary and hammering action to penetrate material. Also known as percussion or impact bits.

	Max. Drilling Dp.	Specs. Met	Includes		Each
Uncoated







	Standard Point

	2"	2"	17"	12"	ANSI B212.15	Pilot Drill	3084A916	0000000

Accessories and Replacements for Drill Bits

	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Component	Specs. Met
Uncoated Carbide-Tipped Steel


2"	2"	5"	Bit Body	ANSI B212.15	3084A45	0000000

Extensions, Replacement Shanks and Replacement Pilot Drills

		Each
6" Overall Length Extension	3084A59	000000
12" Overall Length Extension	3084A63	00000
18" Overall Length Extension	3084A64	000000
SDS-Max Shank	3084A121	00000
Pilot Drill for Changeable-Size Masonry Core Drill Bit	3084A58	00000

Spline Shank for Hammer and Rotary Drilling


	Spline Shank

The shank has 12 splines for use with a spline-drive rotary hammer, which rotate and hammers bits simultaneously to penetrate material. Also known as percussion or impact bits.

	Max. Drilling Dp.	Specs. Met	Includes		Each
Uncoated







	Standard Point

	2"	2"	17"	12"	ANSI B212.15	Pilot Drill	3084A816	0000000

Accessories and Replacements for Drill Bits

	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Component	Specs. Met
Uncoated Carbide-Tipped Steel


2"	2"	5"	Bit Body	ANSI B212.15	3084A45	0000000

Extensions, Replacement Shanks and Replacement Pilot Drills

		Each
6" Overall Length Extension	3084A59	000000
12" Overall Length Extension	3084A63	00000
18" Overall Length Extension	3084A64	000000
Spline Shank	3084A132	00000
Pilot Drill for Changeable-Size Masonry Core Drill Bit	3084A58	00000

Carbide-Insert Drill Bits

Shown with Carbide Inserts

(Sold Separately)

When you need to drill dozens or even hundreds of holes, use a bit with replaceable carbide inserts. Once the cutting edges wear down, just change the inserts instead of sharpening or throwing the bit away. The holes in the bit channel coolant through the tool for more efficient chip evacuation. Also known as indexable drill bits.

Each drill bit requires two inserts—one on the inner cutting edge and one on the outer cutting edge. Replacement inserts are sold separately.

Drill Bits											Replacement Insert Screws
				Shank			For Insert
Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type	Inner Inscribed Circle Dia.	Outer Inscribed Circle Dia.		Each		Each



	2"	2"	10 3/8"	6"	Round	1 1/2"	Carbide Insert	0.585"	0.608"	2769N38	000000000	2780N16	00000

Drill Bit Inserts


Inner Inserts	Outer Inserts


Inner Inserts	Outer Inserts

								Each		Package
	For Drill Bit Size	IC Dia.	Thk.	Hole Dia.	Tip Radius	For Use On	Features		Each	Pkg. Qty.		Pkg.
Inner Inserts







				Titanium Aluminum Nitride (TiAlN)-Coated Carbide

				1 3/4", 2"	0.585"	3/16"	3/16"	1/32"	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	Chip Breakers	2776N26	000000	10	2776N716	0000000


				Outer Inserts







								Titanium Nitride (TiN)-Coated Carbide

								1 3/4", 2"	0.608"	3/16"	3/16"	3/64"	Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	Chip Breakers	2776N27	00000	10	2776N72	000000

Inserts for Carbide-Insert Drill Bits

Pair an inner and outer insert with a compatible drill bit body (sold separately) to drill a large number of holes with high precision. When the cutting edges dull, replace the carbide inserts instead of the entire bit.

Inserts sold individually come packed in a clear plastic case to protect cutting edges during shipment. Inserts sold in packs come factory sealed from the manufacturer for maximum traceability.

Inner


	Individual Carbide Insert Case	Inner Inserts

										Each		Package
	For Drill Bit Size	For Mfr.	For Mfr. Series	IC Dia.	Thk.	Hole Dia.	Tip Radius	For Use On	Features		Each	Pkg. Qty.		Pkg.
Titanium Aluminum Nitride (TiAlN)-Coated Carbide



		1 3/4", 2"	Sandvik Coromant	CoroDrill 880	0.585"	3/16"	3/16"	1/32"	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic	Chip Breakers	2776N26	000000	10	2776N716	0000000

Outer


	Individual Carbide Insert Case	Outer Inserts

										Each		Package
	For Drill Bit Size	For Mfr.	For Mfr. Series	IC Dia.	Thk.	Hole Dia.	Tip Radius	For Use On	Features		Each	Pkg. Qty.		Pkg.
Titanium Nitride (TiN)-Coated Carbide



		1 3/4", 2"	Sandvik Coromant	CoroDrill 880	0.608"	3/16"	3/16"	3/64"	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic	Chip Breakers	2776N27	000000	10	2776N72	0000000

Tight-Tolerance Water-Hardening W1 Tool Steel Rods

Ready for turning in your lathe, these rods are precision ground and held to strict diameter and straightness tolerances. Also known as drill rod. With far less alloy content than other tool steel, W1 is the most machinable we offer. These rods are often used to make hammers, files, and reamers—tools that don't require the dimensional stability of A2 or O1. These rods are also decarb-free, which means any surface flaws created during the manufacturing process have been removed. This makes them even more machinable and leads to better results from heat treating or finishing. Heat treat the surface for extra wear resistance. Or, quench this steel in water to boost its hardness and strength, giving it a sharper, more durable edge for small tools.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Dia.	Dia. Tolerance	Drill Bit Size	Fabrication	Heat Treatment	Yield Strength, psi	Mechanical Finish	Hardness	Max. Hardness After Heat Treatment	Specs. Met		1 ft. Long	3 ft. Long	6 ft. Long
2"	-0.001" to 0.001"	2"	Hot Rolled	Annealed	50,000	Precision Ground	Rockwell B95 (Medium)	Rockwell C65	ASTM A686	8890K109	000000	0000000	0000000