1 1/8" Long Drill Bits | McMaster-Carr

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.

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.

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					Each
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type	Mfr.		1-11	12-Up
Jobbers' Length







				Black Oxide

				73 Ga.	0.024"	1 1/8"	0.27"	Round	0.024"	Standard	Chicago-Latrobe	2901A251	00000	00000


				72 Ga.	0.025"	1 1/8"	0.27"	Round	0.025"	Standard	Chicago-Latrobe	2901A249	0000	0000




						Titanium Nitride (TiN) Coated

						73 Ga.	0.024"	1 1/8"	0.27"	Round	0.024"	Standard	Chicago-Latrobe	29045A833	0000	0000


						72 Ga.	0.025"	1 1/8"	0.27"	Round	0.025"	Standard	Chicago-Latrobe	29045A832	0000	0000




								Uncoated

								73 Ga.	0.024"	1 1/8"	0.27"	Round	0.024"	Standard	Viking Norseman Drill	30585A91	0000	0000


								72 Ga.	0.025"	1 1/8"	0.27"	Round	0.025"	Standard	Viking Norseman Drill	30585A89	0000	0000

Cobalt Steel Drill Bits

Jobbers' Length

Round Shank

Standard

Tough and wear resistant, 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.

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

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.

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

					Shank					Each
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type	Mfr.		1-11	12-Up
Jobbers' Length







				Titanium Nitride (TiN) Coated

				73 Ga.	0.024"	1 1/8"	0.31"	Round	0.024"	Standard	Dormer Pramet	27995A825	00000	00000


				72 Ga.	0.025"	1 1/8"	0.31"	Round	0.025"	Standard	Dormer Pramet	27995A826	0000	0000




						Uncoated

						73 Ga.	0.024"	1 1/8"	0.27"	Round	0.024"	Standard	Chicago-Latrobe	3033A291	0000	0000


						72 Ga.	0.025"	1 1/8"	0.27"	Round	0.025"	Standard	Chicago-Latrobe	3033A289	0000	0000

Center Drills

Create precisely centered holes that mate with lathe centers or drill and countersink in a single step to install fasteners.

Cobalt Steel About Cobalt Steel

Tough and wear resistant, these center drills last at least twice as long as high-speed steel. They can also run up to 25% faster at higher temperatures without chipping on hard materials, such as nickel.

60° Countersink Angle—The most common center drill angle. The short and sturdy tip starts holes that perfectly match lathe centers.

Uncoated—Suitable for most tasks, but won't last as long as coated center drills.

			Dia.					Uncoated
	Trade Size	Drill Bit Size	Body	Shank	Overall Lg.	No. of Flutes	No. of Countersinking Ends	Mfr.		Each
60° Countersink Angle



		00	0.025"	1/8"	1/8"	1 1/8"	2	1	Dormer Pramet	2915A117	000000


		0	1/32"	1/8"	1/8"	1 1/8"	2	1	Dormer Pramet	2915A118	00000

Depth-Limiting Drill Stops

Image of ProductInUse. Front orientation. Drill Stops.

Ensure identical hole depths every time. Position the collar on your bit and tighten the set screw.

	For Drill Bit Size Decimal Equiv.	Overall Lg.	OD	Hex Key Size for Set Screw	Material		Each
For Inch Drill Bits



	5/8"	0.6250"	1 1/8"	1 1/8"	5/32"	Steel	8865A244	000000


	21/32"	0.6563"	1 1/8"	1 1/8"	5/32"	Steel	8865A245	00000
	11/16"	0.6875"	1 1/8"	1 1/8"	5/32"	Steel	8865A246	00000
	45/64"	0.7031"	1 1/8"	1 1/8"	5/32"	Steel	8865A247	00000
	23/32"	0.7188"	1 1/8"	1 1/8"	5/32"	Steel	8865A248	00000
	47/64"	0.7344"	1 1/8"	1 1/8"	5/32"	Steel	8865A249	00000

Combination Extractor/Drill Bit Sets

Drill and remove broken screws, bolts, and studs with a single tool. After drilling, insert the extractor and turn. The part will back out without damaging the threads around it.

		For Screw
	No. of Extractors Included	Thread Dia.	Size	Overall Lg.	Shank Dia.	Turns With	Material		Each
For Right-Hand Threads



		7	0.12" to 0.5"	No. 5, No. 6, No. 8, No. 10, 1/4", 5/16", 3/8", 1/2", M3, M3.12, M3.5, M4, M5, M6, M8, M10, M12	1 1/8", 1 1/4", 1 3/8"	0.103", 0.136", 0.172", 0.177", 0.216", 0.275"	Power Drill	Steel	53405A39	000000

Chip-Clearing High-Speed Steel Drill Bits

Jobbers' Length

High Helix Flute

Round Shank

Standard

With flutes that lift chips out of the hole, you don't have to stop drilling to clear these bits manually. They improve coolant flow to dissipate heat and prevent clogs that can damage the bit and ruin the hole. High-speed steel is good for general purpose drilling in most metals.

High Helix Flute—Less aggressive than parabolic flutes for cleaner cuts in soft metals.

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

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.	Max. Drilling Dp.	Flute Type	Type	Size	Drill Bit Point Type	Mfr.		Each
Jobbers' Length







				Uncoated

				73 Ga.	0.024"	1 1/8"	0.27"	High Helix	Round	0.024"	Standard	Chicago-Latrobe	2912A252	00000


				72 Ga.	0.025"	1 1/8"	0.27"	High Helix	Round	0.025"	Standard	Chicago-Latrobe	2912A251	0000

Hex Bits

Hex Shank

With six contact points, these bits handle more torque than slotted and Phillips bits without slipping and stripping the drive.

Hex Shank—Also known as insert bits, these snap into hand tools. If you want to use them with power tools, attach a bit adapter (not included).

Steel—Best for dry environments, since moisture will cause these bits to rust.

		Each
For Hand Tools







	4 mm Hex Shank Size

	1/16"	1 1/8"	Steel	8526A11	00000


	5/64"	1 1/8"	Steel	8526A12	0000
	3/32"	1 1/8"	Steel	8526A13	0000
	7/64"	1 1/8"	Steel	8526A14	0000
	1/8"	1 1/8"	Steel	8526A15	0000
	9/64"	1 1/8"	Steel	8526A16	0000
	5/32"	1 1/8"	Steel	8526A17	0000
	0.71 mm	1 1/8"	Steel	7389A11	0000
	0.89 mm	1 1/8"	Steel	7389A12	0000
	1.27 mm	1 1/8"	Steel	7389A13	0000
	1.5 mm	1 1/8"	Steel	7389A14	0000


	2 mm	1 1/8"	Steel	7389A15	0000
	2.5 mm	1 1/8"	Steel	7389A16	0000
	3 mm	1 1/8"	Steel	7389A17	0000
	4 mm	1 1/8"	Steel	7389A18	0000

Combination Extractor/Drill Bits

Drill and remove broken screws, bolts, and studs with a single tool. After drilling, insert the extractor and turn. The part will back out without damaging the threads around it.

	For Screw
	Thread Dia.	Size	Overall Lg.	Shank Dia.	Flute Type	Turns With	Material		Each
For Right-Hand Threads



		0.12" to 0.13"	No. 5 to No. 6, M3 to M3.5	1 1/8"	0.103"	Spiral	Power Drill	Steel	53405A41	000000

Slotted Bits

Hex Shank

A straightforward choice for small-scale jobs. These versatile bits handle everything from installing outlet covers and switch plates to fastening screws in sheet metal. However, since they only have two points of contact, they may slip out of the fastener head if you use too much force.

Hex Shank—Also known as insert bits, these snap into hand tools. If you want to use them with power tools, attach a bit adapter (not included).

Steel—Best for dry environments, since moisture will cause these bits to rust.

	Material		Each
For Hand Tools







	4 mm Hex Shank Size

	0.032"	No. 000	1 1/8"	Steel	5750A371	00000


	0.048"	No. 00	1 1/8"	Steel	5750A372	0000
	0.060"	No. 0	1 1/8"	Steel	5750A373	0000
	0.071"	No. 1	1 1/8"	Steel	5750A374	0000
	0.079"	No. 2	1 1/8"	Steel	5750A375	0000
	0.099"	No. 3	1 1/8"	Steel	5750A376	0000
	0.119"	No. 4	1 1/8"	Steel	5750A377	0000
	0.138"	No. 5	1 1/8"	Steel	5750A378	0000
	0.158"	No. 6	1 1/8"	Steel	5750A379	0000

Phillips Bits

Hex Shank

One of the most common drive styles for good reason. Phillips bits align easily with fasteners and deliver more torque than slotted bits.

Hex Shank—Also known as insert bits, these snap into hand tools. If you want to use them with power tools, attach a bit adapter (not included).

Steel—Best for dry environments, since moisture will cause these bits to rust.

	Material		Each
For Hand Tools







	4 mm Hex Shank Size

	No. 000	No. 000	1 1/8"	Steel	5750A44	00000


	No. 00	No. 00	1 1/8"	Steel	5750A45	0000
	No. 0	No. 0, No. 1	1 1/8"	Steel	5750A46	0000
	No. 1	No. 2, No. 3, No. 4	1 1/8"	Steel	5750A47	0000

Fastener-Holding Nutdriver Bits

Hex Shank

Image of Attribute. Front orientation. Contains Annotated.

External

Hex

A mechanism inside the bit holds hex nuts and cap screws in place.

Hex Shank—Hex shank bits (also known as insert bits) are used in hand drivers or with a bit adapter in power tools.

Magnet—Bits with magnet hold steel fasteners.

			Overall
	Drive Size	Bolt Clearance	Lg.	Dia.	Fastener-Holding Mechanism	Material		Each
1/4" Hex Shank



		1/4"	1/8"	1 1/8"	0.438"	Magnet	Steel	54515A61	00000


		5/16"	1/8"	1 1/8"	0.5"	Magnet	Steel	54515A62	0000
		3/8"	1/8"	1 1/8"	0.563"	Magnet	Steel	54515A63	0000
		7 mm	1/8"	1 1/8"	0.438"	Magnet	Steel	54515A64	0000
		8 mm	1/8"	1 1/8"	0.5"	Magnet	Steel	54515A65	0000
		10 mm	1/8"	1 1/8"	0.563"	Magnet	Steel	54515A66	0000

Drill-Bit Counterbores for Wood

Shown with Drill Bit (Sold

Separately)

Drill and counterbore holes of different depths without changing tools. These counterbores move along the drill bit (sold separately) and lock into place with set screws to match the length of the screw you're installing.

Steel


	Depth Stops

Depth Stops—Attach with a set screw to stop the counterbore at the exact depth you need.

Counterbores							Depth Stops
					Uncoated
Body Dia.	Overall Lg.	No. of Flutes	For Drill Bit Size	Mfr.		Each	OD	Wd.		Each



	3/4"	1 1/8"	4	5/16"	W. L. Fuller	3105A13	000000	1"	1/4"	2903A18	00000

Strong-Hold Bit Adapters for Ratchet Wrenches

Twist-Lock

Bit Holder

Set-Screw Bit

Holder

Lock your bit into the adapter to prevent accidental disengagement. These adapters fit square-drive tools and accept hex-shank screwdriver bits. They have nonmagnetic bit holders, so they won’t attract loose metal parts and shavings.

Twist-Lock Bit Holder—To secure a bit in twist-lock adapters, tighten the knurled end.

	For Bit Shank Type	For Bit Hex Shank Size	Overall Lg.	Material		Each
Twist-Lock Bit Holder



	1/4"	Hex, Quick-Change Hex	1/4"	1 1/8"	Steel	7229A48	00000


	Set-Screw Bit Holder



			3/8"	Hex	1/4"	1 1/8"	Steel	7229A78	0000


			3/8"	Hex	5/16"	1 1/8"	Steel	7229A79	0000

Pentalobe Bits

Turn pentalobe screws found on Apple devices and other electronics. Their unique five-lobe shape delivers high torque without slipping and damaging the drive.

Hex Shank—Also known as insert bits, these snap into hand tools that accept a 4 mm hex shank. To fit them into a 1/4" hex shank driver, you'll need an adapter (sold separately).

Steel—Best for dry environments, since moisture will cause these bits to rust.

	Screwdriver Bits					1/4" Hex Shank Size Bit Adapters
	Drive Size	Overall Lg.	Material		Each		Each
For Hand Tools







				4 mm Hex Shank Size

				PL1	1 1/8"	Steel	1533N1	00000	7225A75	00000


				PL2	1 1/8"	Steel	1533N2	0000	7225A75	0000
				PL3	1 1/8"	Steel	1533N3	0000	7225A75	0000
				PL4	1 1/8"	Steel	1533N4	0000	7225A75	0000
				PL5	1 1/8"	Steel	1533N5	0000	7225A75	0000
				PL6	1 1/8"	Steel	1533N6	0000	7225A75	0000

Finger-Tightening Socket Adapters

Fit these adapters between a wrench and socket to enable finger tightening. Also known as spinners.

Square Drive Size Socket Adapter—Square drive size adapters also convert one square drive size to another.

	Head Dia.	Overall Lg.	Material		Each
Finger-Tightening Adapters/Square Drive Size Adapters



	3/8" (Female) × 1/2" (Male)	1 1/8"	1 1/8"	Chrome-Plated Steel	6452A13	000000

Torx Bits

Hex Shank

Get a grip with less slip. These bits have a six-lobe shape that grips fasteners so they won't slip and damage the drive. Also known as star bits.

Hex Shank—Also known as insert bits, these snap into hand tools. If you want to use them with power tools, attach a bit adapter (not included).

Steel—Best for dry environments, since moisture will cause these bits to rust.

		Each
For Hand Tools







	4 mm Hex Shank Size

	T3	1 1/8"	Steel	7013A61	00000


	T4	1 1/8"	Steel	7013A62	0000
	T5	1 1/8"	Steel	7013A63	0000
	T6	1 1/8"	Steel	7013A64	0000
	T7	1 1/8"	Steel	7013A65	0000
	T8	1 1/8"	Steel	7013A66	0000
	T9	1 1/8"	Steel	7013A67	0000
	T10	1 1/8"	Steel	7013A68	0000
	T15	1 1/8"	Steel	7013A69	0000
	T20	1 1/8"	Steel	7013A71	0000

Square Drive Size Adapters

Convert from one square drive size to another. The female side of the adapter attaches to your wrench; the male side to your socket. These adapters have a finish that provides some corrosion resistance.

Black-Oxide Steel—Black-oxide steel adapters are easy to grip when dirty or wet.

	Overall Lg.		Each
Black-Oxide Steel



	3/8" (Female) × 1/4" (Male)	1 1/8"	55315A21	00000

Reamers

Finish holes to precise inch, metric, wire gauge, or letter sizes with these reamers.

Round Shank

Straight Flute

These reamers fit in the chuck of drill presses, turret lathes, and other machine and power tools, making them the most common shank type.

Straight Flute—The most common flute style, these reamers are suitable for a wide range of applications, but not recommended for holes with a keyway or other breaks in the surface.

High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.

Cobalt Steel—With better heat and wear resistance than high-speed steel, these reamers run up to 25% faster, last longer, and perform better on hard materials, such as cast iron, hardened steel, titanium, and stainless steel.

			Lg.
	Reamer Dia.	Material	Flute	Overall	No. of Flutes	Cutting Dia. Tolerance	For Use On		Each
Straight Flute







				Wire Gauge

				0.0240" (73 Ga.)	High-Speed Steel	1/2"	1 1/8"	3	0" to 0.0002"	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	8930A123	000000


				0.0240" (73 Ga.)	Cobalt Steel	1/2"	1 1/8"	3	0" to 0.0002"	Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	2733A942	00000
				0.0250" (72 Ga.)	High-Speed Steel	1/2"	1 1/8"	3	0" to 0.0002"	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	8930A122	00000
				0.0250" (72 Ga.)	Cobalt Steel	1/2"	1 1/8"	3	0" to 0.0002"	Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	2733A941	00000

Oversized Hardened Multipurpose M2 High-Speed Tool Steel Rods

Also known as reamer blanks, these rods have an oversized diameter that allows for finishing to your exact requirements. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.

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

Dia.	Dia. Tolerance	Reamer Size	Lg.	Fabrication	Yield Strength	Hardness	Mechanical Finish		Each
0.024"	0" to 0.0002"	73 Ga.	1 1/8"	Hot Rolled	Not Rated	Rockwell C60 (Extra Hard)	Precision Ground	3023A391	00000
0.025"	0" to 0.0002"	72 Ga.	1 1/8"	Hot Rolled	Not Rated	Rockwell C60 (Extra Hard)	Precision Ground	3023A389	0000

Undersized Hardened Multipurpose M2 High-Speed Tool Steel Rods

These rods, also known as drill blanks, have an undersized diameter for machining your own drill bits. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.

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	Lg.	Yield Strength	Hardness	Mechanical Finish		Each
0.024"	-0.0002" to 0"	73 Ga.	1 1/8"	Not Rated	Rockwell C60 (Extra Hard)	Precision Ground	3009A291	00000
0.025"	-0.0002" to 0"	72 Ga.	1 1/8"	Not Rated	Rockwell C60 (Extra Hard)	Precision Ground	3009A289	0000