86mm 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.

Black/Gold Oxide—Like black oxide, this finish adds wear resistance and reduces friction for improved chip flow. Because it’s less prone to flaking off, it offers better rust protection when bits aren't in use.

					Shank
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Type	Size	Drill Bit Point Type	Mfr.	Pkg. Qty.		Pkg.
Jobbers' Length







				Black Oxide

				4.8	0.189"	86	42.4	Round	4.8 mm	Standard	Dormer Pramet	1	2958A81	00000


				5.0	0.1969"	86	42	Round	5 mm	Standard	Dormer Pramet	1	2958A83	0000
				5.0	0.1969"	86	42	Round	5 mm	Standard	Dormer Pramet	10	2958A832	00000
				5.1	0.2008"	86	41.8	Round	5.1 mm	Standard	Dormer Pramet	1	2958A84	0000
				5.2	0.2047"	86	41.6	Round	5.2 mm	Standard	Dormer Pramet	1	2958A85	0000
				5.3	0.2087"	86	41.4	Round	5.3 mm	Standard	Dormer Pramet	1	2958A86	0000




						Titanium Nitride (TiN) Coated

						5.0	0.1969"	86	44.5	Round	5 mm	Standard	Chicago-Latrobe	1	8950A17	0000


						5.2	0.2047"	86	41.6	Round	5.2 mm	Standard	Dormer Pramet	1	8950A54	0000




								Uncoated

								4.5	0.1772"	86	46.8	Round	4.5 mm	Standard	Viking Norseman Drill	1	2951A133	0000




										Black/Gold Oxide

										4.4	0.1732"	86	50.8	Round	4.4 mm	Split	Viking Norseman Drill	1	30565A265	0000


										4.5	0.1772"	86	50.8	Round	4.5 mm	Split	Viking Norseman Drill	1	30565A266	0000
										4.5	0.1772"	86	50.8	Round	4.5 mm	Split	Viking Norseman Drill	10	30565A432	00000
										4.6	0.1811"	86	50.8	Round	4.6 mm	Split	Viking Norseman Drill	1	30565A267	0000

Cobalt Steel Drill Bits


Jobbers' Length Round Shank	Split

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.

Titanium Aluminum Nitride (TiAlN) Coated—The hardest and most wear-resistant coating, especially at high temperatures. These bits are best for hard and abrasive materials, such as iron, titanium, and fiberglass.

Gold Oxide—Like black oxide, this finish adds wear resistance and reduces friction for improved chip flow. Because it’s less prone to flaking off, it offers better rust protection when bits aren't in use.

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







				Titanium Nitride (TiN) Coated

				4.8	0.189"	86	52	Round	4.8 mm	Split	Chicago-Latrobe	5058N32	00000


				5.0	0.1969"	86	52.1	Round	5 mm	Split	Dormer Pramet	5058N64	0000
				5.1	0.2008"	86	52	Round	5.1 mm	Split	Dormer Pramet	5058N127	0000
				5.2	0.2047"	86	52	Round	5.2 mm	Split	Dormer Pramet	5058N128	00000
				5.3	0.2087"	86	52	Round	5.3 mm	Split	Dormer Pramet	5058N129	00000




						Titanium Aluminum Nitride (TiAlN) Coated

						4.8	0.189"	86	52	Round	4.8 mm	Split	Chicago-Latrobe	2753A234	00000


						5.0	0.1969"	86	44.5	Round	5 mm	Split	Guhring	2753A171	00000




								Gold Oxide

								4.8	0.189"	86	42.4	Round	4.8 mm	Split	Dormer Pramet	29355A75	0000


								5.0	0.1969"	86	42	Round	5 mm	Split	Dormer Pramet	29355A77	0000
								5.1	0.2008"	86	41.8	Round	5.1 mm	Split	Dormer Pramet	29355A78	0000
								5.2	0.2047"	86	41.6	Round	5.2 mm	Split	Dormer Pramet	29355A79	0000
								5.3	0.2087"	86	41.5	Round	5.3 mm	Split	Dormer Pramet	29355A82	0000

Chip-Clearing Cobalt Steel Drill Bits


Jobbers' Length Parabolic Flute Round Shank	Split

Avoid clogs and dissipate heat with cobalt bits that last at least twice as long as high-speed steel. The flutes clear chips to improve coolant flow and prevent damage to the bit and the hole. They also speed up drilling since you don't have to stop to clear the bit manually.

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, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Flute Type	Type	Size, mm	Drill Bit Point Type	Mfr.		Each
Jobbers' Length







				Uncoated

				4.9	0.1929"	86	50	Parabolic	Round	4.9	Split	Viking Norseman Drill	2771N751	00000


				5.0	0.1969"	86	50	Parabolic	Round	5	Split	Viking Norseman Drill	2771N53	0000
				5.1	0.2008"	86	50	Parabolic	Round	5.1	Split	Viking Norseman Drill	2771N752	0000
				5.2	0.2047"	86	50	Parabolic	Round	5.2	Split	Viking Norseman Drill	2771N753	0000
				5.25	0.2067"	86	50	Parabolic	Round	5.25	Split	Viking Norseman Drill	2771N754	0000

High-Speed Steel Drill Bits for Plastic

The precision-ground, 60° point penetrates gradually to prevent cracking and chipping. It also reduces heat that can deform the material. Use these bits for drilling into acrylic, laminate, and other plastics. They're made of wear-resistant high-speed steel.

Jobbers' Length About Jobbers' Length

					Shank
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Type	Size, mm	Point Angle	Drill Bit Point Type	Mfr.		Each
Uncoated



		5.0	0.1969"	86	61	Round	5	60°	Standard	ICS	27465A415	00000

Left-Hand High-Speed Steel Drill Bits

Jobbers' Length

Round Shank

Standard

With flutes that spiral in the opposite direction of other bits, these are primarily used to remove stripped screws. Choose a bit that’s slightly smaller than the diameter of the screw’s head. Set your power tool to rotate in reverse. Slowly drill in the center of the screw head, maintaining constant pressure. As the bit penetrates, it will catch onto the screw and reverse it out of the hole. If the screw is badly stripped, you might need to punch a starter hole. Also known as reverse-flute bits. High-speed steel is the versatile choice for drilling most metals.

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					Each
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Type	Size	Drill Bit Point Type	Mfr.		1-9	10-Up
Jobbers' Length







				Black Oxide

				4.8	0.189"	86	42.4	Round	4.8 mm	Standard	Dormer Pramet	29855A82	000000	000000


				5.0	0.1968"	86	43	Round	5 mm	Standard	Dormer Pramet	29855A84	00000	0000
				5.1	0.2008"	86	42.8	Round	5.1 mm	Standard	Dormer Pramet	29855A59	00000	00000
				5.2	0.2047"	86	20.8	Round	5.2 mm	Standard	Dormer Pramet	29855A136	00000	00000

Chip-Clearing High-Speed Steel Drill Bits

Jobbers' Length

High Helix Flute

Round Shank

Jobbers' Length

Parabolic Flute

Round Shank

Split

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.

Parabolic Flute—A U-shaped groove on the flutes cuts faster and clears chips more quickly than high-helix bits, so these are better for drilling deeper holes.

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.

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
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Flute Type	Type	Size, mm	Drill Bit Point Type	Mfr.		Each
Jobbers' Length







				Black Oxide

				5.0	0.1969"	86	42	High Helix	Round	5	Split	Dormer Pramet	30055A64	00000




						Titanium Nitride (TiN) Coated

						5.0	0.1969"	86	52	Parabolic	Round	5	Split	Dormer Pramet	7333N23	0000


						5.2	0.2047"	86	52	Parabolic	Round	5.2	Split	Dormer Pramet	7333N24	00000




								Uncoated

								5.0	0.1969"	86	42	Parabolic	Round	5	Split	Dormer Pramet	2754A28	0000


								5.2	0.2047"	86	52	Parabolic	Round	5.2	Split	Dormer Pramet	2754A98	0000

Left-Hand Cobalt Steel Drill Bits

Jobbers' Length

Round Shank

Split

The flutes spiral in the opposite direction of other bits and stay sharp longer than high-speed steel. They’re primarily used to remove stripped screws. Choose a bit that’s slightly smaller than the diameter of the screw’s head. Set your power tool to rotate in reverse. Slowly drill in the center of the screw head, maintaining constant pressure. As the bit penetrates, it will catch onto the screw and reverse it out of the hole. If the screw is badly stripped, you might need to punch a starter hole. Also known as reverse-flute 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					Each
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Type	Size	Drill Bit Point Type	Mfr.		1-9	10-Up
Jobbers' Length







				Uncoated

				4.5	0.1772"	86	56	Round	4.5 mm	Split	Viking Norseman Drill	3474A55	000000	000000

Chip-Clearing Cobalt Steel Drill Bits for Nickel and Stainless Steel

Jobbers' Length

Parabolic Flute

Round Shank

Split

Excellent for challenging metals such as stainless steel and nickel alloys, these bits cut aggressively and evacuate chips quickly. The grooved flutes prevent clogs and improve coolant flow to dissipate heat that can damage the bit or your material. Bits are made of tough and wear-resistant cobalt steel.

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

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







				Titanium Aluminum Nitride (TiAlN) Coated

				5.0	0.1969"	86	52	Parabolic	Round	5	Split	Guhring	3020A46	000000

High-Speed Steel Square End Mills

4 Flutes

Use these end mills for general purpose milling in most material, such as aluminum, brass, bronze, iron, and steel. They have a square end for milling square slots, pockets, and edges.

End mills with fewer flutes provide better chip clearance for high-volume, high-speed plunge, slotting, and roughing cuts; end mills with more flutes provide a finer finish and operate with less vibration when run at high speeds.

Uncoated High-Speed Steel—Use uncoated end mills for general purpose milling and short production runs.

Center Cutting—Center-cutting end mills allow plunge cuts into a surface.

	Mill, mm
	Dia.	Dia. Tolerance	Shank Dia., mm	Lg. of Cut, mm	Overall Lg., mm	Flute Spacing	Helix Angle	For Use On	End Mill Type	Cut Style	Mfr.		Each
Uncoated High-Speed Steel







				4 Flutes

				12.5	0.000 to 0.038	12.7	34.9	86	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Cleveland	8854A26	000000


				13	0.000 to 0.038	12.7	34.9	86	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Cleveland	8854A27	00000
				14	0.000 to 0.038	12.7	34.9	86	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Cleveland	8854A28	00000
				15	0.000 to 0.038	12.7	34.9	86	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Cleveland	8854A29	00000

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







			Titanium Nitride (TiN) Coated

			4, 6, 8, 10, 12, 14, 16, 18, 20, 22	0.1575", 0.2362", 0.315", 0.3937", 0.4724", 0.5512", 0.6299", 0.7087", 0.7874", 0.8661"	86	VersaDrive Hex	7/16"	Split	118°	Holemaker Technology	9630N15	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

Cobalt Steel Square End Mills with Two Milling Ends

4 Flutes

When one end wears out, switch to the opposite end for two times the life of a standard cobalt steel end mill. With better heat and wear resistance than high-speed steel, these cobalt steel end mills can run at higher speeds and provide better performance on hard material, such as iron, hardened steel, titanium, and tool steel. Their square ends make them good for milling square slots, pockets, and edges. All are center cutting, allowing plunge cuts into a surface.

4 Flutes—End mills with four flutes provide a finer finish and operate with less vibration when run at high speeds.

	Mill, mm
	Dia.	Dia. Tolerance	Shank Dia., mm	Lg. of Cut, mm	Overall Lg., mm	Flute Spacing	Helix Angle	For Use On	End Mill Type	Cut Style	Mfr.		Each
Uncoated Cobalt Steel







				4 Flutes

				6	-0.0380 to 0.0000	9.5	15.9	86	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Melin Tool	8891A34	000000


				7	-0.0380 to 0.0000	9.5	17.5	86	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Melin Tool	8891A35	00000

High-Speed Steel Square End Mills with Two Milling Ends

2 Flutes

When one end wears out, switch to the opposite end for two times the life of a standard high-speed steel end mill. Made of high-speed steel, these end mills are for general purpose milling in most material, such as aluminum, brass, bronze, iron, and steel. Their square ends make them good for milling square slots, pockets, and edges. All are center cutting, allowing plunge cuts into a surface.

Uncoated High-Speed Steel—Use uncoated end mills for general purpose milling and short production runs.

	Mill, mm
	Dia.	Dia. Tolerance	Shank Dia., mm	Lg. of Cut, mm	Overall Lg., mm	Flute Spacing	Helix Angle	For Use On	End Mill Type	Cut Style	Mfr.		Each
Uncoated High-Speed Steel







				2 Flutes

				6	0.0000 to 0.0760	9.5	12.7	86	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Regal Cutting Tools	8855A64	000000


				7	0.0000 to 0.0760	9.5	14.3	86	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Regal Cutting Tools	8855A65	00000