1 3/8" Drill Bits | McMaster-Carr

Drill multiple hole sizes using only one bit. These have steps with progressively larger diameters—the deeper they drill, the bigger the hole. Count the steps as you drill to achieve the proper size. These bits also deburr as they cut, so they're good for thin materials like sheet metal and plastic panels. Wear and heat resistant, high-speed steel is versatile for use on a range of materials.

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.

Uncoated—The most economical option, uncoated bits perform best when used on low-carbon steel and aluminum. Polished to reduce friction, they're also known as bright finish bits.

			Shank
Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Type	Size	Drill Bit Point Type	Mfr.		Each







			Black Oxide

			1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4", 1 3/8"	0.25", 0.375", 0.5", 0.625", 0.75", 0.875", 1", 1.125", 1.25", 1.375"	3 1/8"	Round/3-Flat	3/8"	Standard	Milwaukee	5910N15	0000000


			7/8", 1", 1 1/8", 1 1/4", 1 3/8"	0.875", 1", 1.125", 1.25", 1.375"	3"	Round/3-Flat	3/8"	Standard	Milwaukee	5910N18	000000




					Uncoated

					1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4", 1 3/8"	0.25", 0.375", 0.5", 0.625", 0.75", 0.875", 1", 1.125", 1.25", 1.375"	3 1/8"	Hex	3/8"	Standard	Black & Decker	8841A25	00000


					13/16", 7/8", 15/16", 1", 1 1/16", 1 1/8", 1 3/16", 1 1/4", 1 5/16", 1 3/8"	0.8125", 0.875", 0.9375", 1", 1.0625", 1.125", 1.1875", 1.25", 1.3125", 1.375"	2 1/8"	Hex	3/8"	Standard	Black & Decker	8841A34	000000

Reduced-Shank High-Speed Steel Drill Bits

Jobbers' Length

Standard

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	Mfr.		Each
Jobbers' Length







				Black Oxide

				1 3/8"	1.375"	6"	2.1"	Reduced Round	1/2"	Standard	Chicago-Latrobe	2933A72	0000000


				1 3/8"	1.375"	6"	2.1"	Reduced Round/3-Flat	1/2"	Standard	Chicago-Latrobe	29415A82	000000
				1 3/8"	1.375"	6"	2.1"	Reduced Round	3/4"	Standard	Dormer Pramet	8772A17	000000

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	Mfr.		Each
Jobbers' Length







				Black Oxide

				1 3/8"	1.375"	14 1/2"	6.81"	Morse Taper	Morse 4	Standard	Chicago-Latrobe	2929A465	0000000

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	Mfr.		Each
Jobbers' Length







				Uncoated

				1 3/8"	1.375"	6"	3"	Reduced Round	3/4"	Split	Republic Drill	8814A47	0000000

Carbide-Tipped Drill Bits for Masonry and Concrete

Crush rather than cut material so bits don’t jam or overheat while drilling masonry and concrete. The ultra-hard carbide tip breaks masonry into pieces and the widely spaced flutes channel them out of the hole. These bits stay sharp, resisting wear and heat that will dull or break other bits.

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	Mfr.		Each
Uncoated







	Multipoint

	1 3/8"	1.375"	22"	16"	ANSI B212.15	Relton	88705A38	0000000

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	Mfr.		Each
Uncoated







	Standard Point

	1 3/8"	1.375"	22"	16"	ANSI B212.15	Relton	8783A63	0000000




			Multipoint

			1 3/8"	1.375"	22"	16"	ANSI B212.15	Relton	8809A23	000000

Hex Shank for Hammer and Rotary Drilling

The hex shape is less likely to slip in the chuck than a round shank. Use simultaneous rotary and hammering action to drill faster and penetrate material with less pressure than rotary-only bits. Also known as percussion or impact bits.

	Max. Drilling Dp.	Shank Size	Specs. Met	Mfr.		Each
Uncoated







	Standard Point

	1 3/8"	1.375"	6"	4"	1/2"	ANSI B212.15	Tru-Cut	8897A32	000000

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.

	Max. Drilling Dp.	Shank Size	Specs. Met	Mfr.		Each
Uncoated







	Standard Point

	1 3/8"	1.375"	12"	10"	1/2"	ANSI B212.15	Tru-Cut	2960A33	000000


	1 3/8"	1.375"	18"	16"	1/2"	ANSI B212.15	Tru-Cut	2960A34	00000

Dust-Collecting Carbide-Tipped Drill Bits for Masonry and Concrete

Connect these hollow bits to a vacuum system, and they'll suck up dust while drilling. Use them to meet OSHA standards for silica dust exposure when drilling in concrete, brick, and other powdery masonry material. These bits are especially useful for cutting holes for adhesive anchors—you don't need to clean out the hole before installing. They have a titanium nitride (TiN)-coated carbide tip that 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.

	Max. Drilling Dp.	For Vacuum Hose ID	Mfr.		Each
Titanium Nitride (TiN) Coated







	Standard Point

	1 3/8"	1.375"	35"	25"	1 3/8"	Bosch	2656N6	0000000

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	Mfr.		Each
Diamond Coated







	Standard Point

	1 3/8"	1.375"	15 1/2"	13"	1 3/8"	5/8"-11	1 1/8"	Di-Corp	2872A31	0000000

Drill Rig Thread Adapters

		Thread SIze
For Threaded-Hub-Shank Drill Bits


5 3/8"	5/8"-11	1 1/4"-7	2872A99	0000000

Drill Bits for Wood

Make rough holes in wood for jobs such as running wire and pipe through framing studs and sheets. These bits have two sharp edges for faster cuts than fluted bits and won't cause the surface of the material to splinter. A centering point keeps them stable while drilling soft and hard woods such as pine, plywood, and oak. Also known as spade bits.

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







	Quick-Change Hex Shank

	1 3/8"	1.375"	6"	4 1/2"	1/4"	Standard	Black & Decker	2894A71	00000

Rebar-Cutting Carbide-Tipped Drill Bits

No need to move the hole when you encounter rebar in concrete—swap out your masonry bit for one of these cutters. They have a carbide tip that resists wear to stay sharp. Once you're through the rebar, resume drilling with the masonry bit.

SDS-Plus Shank for Rotary Only Drilling


	SDS-Plus Shank

	Max. Drilling Dp.	Specs. Met	Mfr.		Each
Uncoated







	Standard Point

	1 3/8"	1.375"	12"	10"	ANSI B212.15	Relton	28655A72	0000000

Round Shank for Rotary Only Drilling

Pair these bits with hand-held power drills and hammer drills set to rotary-only mode. Because bits rotate only, they require more pressure to grind up material than other bits.

	Max. Drilling Dp.	Shank Size	Specs. Met	Mfr.		Each
Uncoated







	Standard Point

	1 3/8"	1.375"	12"	10"	1/2"	ANSI B212.15	Relton	28655A37	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	Mfr.		Each
Black Oxide







	Quick-Change Hex Shank

	1 3/8"	1.375"	5"	—	7/16"	Screw	Milwaukee	3188A14	000000


	Uncoated







					Round Shank

					1 3/8"	1.375"	6"	4"	1/2"	Standard	Stern	2890A26	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.	Mfr.		Each		Each



	1 3/8"	1.375"	8"	4.13"	Round	1 1/2"	Carbide Insert	0.402"	0.419"	Sandvik Coromant	2769N31	0000000	2780N15	00000


	1 3/8"	1.375"	10 3/4"	6.88"	Round	1 1/2"	Carbide Insert	0.402"	0.419"	Sandvik Coromant	2769N32	00000000	2780N15	0000

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 1/4", 1 3/8"	0.402"	1/8"	3/16"	1/32"	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	Chip Breakers	2776N22	000000	10	2776N544	0000000


				Outer Inserts







								Titanium Nitride (TiN)-Coated Carbide

								1 1/4", 1 3/8"	0.419"	1/8"	3/16"	1/32"	Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	Chip Breakers	2776N23	00000	10	2776N545	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	Mfr.		Each
Carbide Tipped/Uncoated







	Round Shank

	1 3/8"	1.375"	3 1/2"	3"	3/8"	Standard	Freud	8799A41	000000

Extensions

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

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 1/4", 1 3/8"	Sandvik Coromant	CoroDrill 880	0.402"	1/8"	3/16"	1/32"	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Fiberglass, Plastic	Chip Breakers	2776N22	000000	10	2776N544	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 1/4", 1 3/8"	Sandvik Coromant	CoroDrill 880	0.419"	1/8"	3/16"	1/32"	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Aluminum, Brass, Bronze, Plastic	Chip Breakers	2776N23	000000	10	2776N545	0000000

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	Mfr.		Each
Uncoated







	Round Shank

	1 3/8"	1.375"	3 1/2"	3"	13/32"	Standard	Alfa USA	3216A29	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.

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







	Quick-Change Hex Shank

	1 3/8"	1.375"	6 1/2"	4"	7/16"	Screw	Milwaukee	2897A19	000000

Impact Wrench High-Speed Steel Step Drill Bits

Speed up jobs using high torque to drill multiple hole sizes with just one bit. Made with an oversized shank and hardened high-speed steel, these bits are built to handle the power of your impact wrench without snapping, even in large holes and hard materials such as stainless steel. Since your wrench absorbs kickback, it won’t fight you if the bit snags, reducing wrist strain and fatigue during long jobs.

The split point starts cutting on contact, so you don’t need to drill a pilot hole. The steps have progressively larger diameters—the deeper you drill, the bigger the hole. Count the steps as you drill to achieve the proper size. These bits also deburr as they cut, so they’re often used for thin materials such as sheet metal and plastic panels.

You’ll need a VersaDrive chuck (sold separately) to install these bits into your impact wrench. You can also get chucks for impact drivers and magnetic-base drills (both sold separately). For jobs that don’t require the torque of an impact tool, you can fit these bits directly into a _1/2" chuck on a standard power drill.

Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated and oxide-coated bits, especially on tough materials like hardened steel and nickel.

			Shank
Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Type	Size	Drill Bit Point Type	Point Angle	Mfr.		Each







			Titanium Nitride (TiN) Coated

			1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4", 1 3/8"	0.25", 0.375", 0.5", 0.625", 0.75", 0.875", 1", 1.125", 1.25", 1.375"	3 1/4"	VersaDrive Hex	7/16"	Split	118°	Holemaker Technology	9630N13	0000000

Accessories for Drill Bits

Required Chucks

Quick-Change

Strong-Hold

These chucks mount directly onto the square drive of your impact wrench. They work with any tool with a VersaDrive hex shank, so you don’t need to swap chucks to use reamers, taps, and other tools.

Quick-Change Pull-Back Tool Release—Require just one hand to load. Push your tool in the chuck until you hear the ball detents click into place. To remove your tool, pull back the collar.

Strong-Hold Push-Forward Tool Release—Hold cutting tools more securely than quick-change chucks. To insert and remove cutting tools, you must push a collar forward. Since impact force drives your cutting tool the opposite way, it can’t come loose from the chuck while you work.

Manganese Phosphate-Coated Steel—The coating on these chucks prevents rust.

		For Shank
	For Square Drive Size	Type	Size	Overall Lg.	Material	Includes		Each
Quick-Change Pull-Back Tool Release



		1/2"	VersaDrive Hex	7/16"	2 5/32"	Black-Oxide Steel	Retaining Ring, Retention Pin	9589N112	000000


		Strong-Hold Push-Forward Tool Release



				3/8"	VersaDrive Hex	7/16"	2"	Manganese Phosphate-Coated Steel	Retaining Ring, Retention Pin	9589N111	000000


				1/2"	VersaDrive Hex	7/16"	2 5/32"	Manganese Phosphate-Coated Steel	Retaining Ring, Retention Pin	9589N113	000000
				3/4"	VersaDrive Hex	7/16"	2 3/8"	Manganese Phosphate-Coated Steel	Retaining Ring, Retention Pin	9589N114	000000

Optional Extensions

Extend your cutting tool’s reach. These extensions attach to your chuck and accept any tool with a VersaDrive hex shank.

		For Shank		Shank
	Overall Lg.	Type	Size	Type	Size	OD	Material		Each
Quick-Change Pull-Back Tool Release



		5"	VersaDrive Hex	7/16"	VersaDrive Hex	7/16"	1 7/64"	Black-Oxide Steel	9589N115	000000


		12"	VersaDrive Hex	7/16"	VersaDrive Hex	7/16"	1 7/64"	Black-Oxide Steel	9589N116	00000

Optional Chucks

		Each
Optional Chuck for Impact Drivers - 1/4" Quick-Change Hex Shank (Male) to VersaDrive Hex Shank (Female)	9594N111	000000
Optional Chuck for Magnetic-Base Drills - 3/4" Round Shank (Male) to VersaDrive Hex Shank (Female)	9585N111	00000

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
1.375"	-0.001" to 0.001"	1 3/8"	Hot Rolled	Annealed	50,000	Precision Ground	Rockwell B95 (Medium)	Rockwell C65	ASTM A686	8890K103	000000	000000	0000000

		Thread SIze
	Overall Lg.	Male Thread Size	Female Thread Size		Each
For Threaded-Hub-Shank Drill Bits



		5 3/8"	5/8"-11	1 1/4"-7	2872A99	0000000