92mm Long Drill Bits | McMaster-Carr

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.

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







				Gold Oxide

				4.9	0.1929"	92	61.1	Round	4.9 mm	Split	30565A271	00000	—	———	0


				5.0	0.1969"	92	61.1	Round	5 mm	Split	30565A272	0000	10	30565A433	000000
				5.1	0.2008"	92	61.1	Round	5.1 mm	Split	30565A273	0000	10	30565A434	00000




						Uncoated

						5.0	0.1969"	92	52.4	Round	5 mm	Standard	2951A134	0000	—	———	0

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.

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		1-9	10-Up
Jobbers' Length







				Uncoated

				4.9	0.1929"	92	61.1	Round	4.9 mm	Split	29355A76	00000	00000

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		1-9	10-Up
Jobbers' Length







				Uncoated

				5.0	0.1968"	92	62	Round	5 mm	Split	3474A56	000000	000000

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		Each
Jobbers' Length







				Uncoated

				5.5	0.2165"	92	55	Parabolic	Round	5.5	Split	2771N54	00000


				6.0	0.2362"	92	55	Parabolic	Round	6	Split	2771N55	0000

Coolant-Fed Carbide Drill Bits

Jobbers' Length

Round Shank

The hardest and most wear-resistant bits, these deliver coolant to reduce heat and evacuate chips. They are designed for CNC machines that supply coolant through the spindle rather than an external source, such as a hose and nozzle. Coolant flows directly from holes in the bit's tip onto the drilling surface. This speeds up cuts and leads to excellent performance in deep holes and tough materials such as stainless steel and titanium.

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

Titanium Aluminum Nitride (TiAlN) Coated—No drill bits last longer. These are the best for high-speed, high-temperature drilling of very hard and abrasive materials, including titanium and fiberglass.

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







				Titanium Aluminum Nitride (TiAlN) Coated

				7.0	0.2756"	92	53.1	Round	8 mm	Four Facet	2396N277	0000000


				7.5	0.2953"	92	53.1	Round	8 mm	Four Facet	2396N28	000000
				8.0	0.315"	92	53.1	Round	8 mm	Four Facet	2396N287	000000

Carbide-Tipped Drill Bits

Short Length

Round Shank

Standard

Performance similar to solid carbide but at a lower price point. Like carbide bits, these are stronger than cobalt and high-speed steel and maintain their sharp edges when drilling abrasive material. However, when drilling tough metals like iron and hardened steel, upgrade to carbide for longer life.

Short Length—The most rigid bits for drilling the straightest holes.

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







				Uncoated

				11.5	0.4528"	92	34.5	Round	11.5 mm	Standard	28805A419	000000


				12.0	0.4724"	92	36	Round	12 mm	Standard	28805A421	00000

Fast-Cut Carbide Ball End Mills

Ball Cut Style

Variable spacing between the flutes reduces vibration, allowing these end mills to provide fast cuts, smooth finishes, and long tool life on hard materials. Made of solid carbide, these end mills are harder, stronger, and more wear resistant than high-speed steel and cobalt steel for the longest life and best finish on hard material. Their extreme hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent the end mill from breaking. They have a ball end for milling rounded slots, slopes, and contours. All are center cutting, allowing plunge cuts into a surface.

Aluminum Titanium Nitride (AlTiN)-Coated Carbide—A titanium aluminum nitride (TiAlN) or aluminum titanium nitride (AlTiN) coating allows them to dissipate heat better than other end mills, especially at high speeds. At high temperatures, the coating creates a layer of aluminum oxide that transfers heat to the chips, keeping the tool cool, even when used without lubrication. This makes these good for aggressive machining while roughing or making interrupted cuts.

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

Overall Lg., mm	Flute Spacing	Helix Angle	Max. Ramping Angle	For Use On	End Mill Type	Cut Style		Each







Aluminum Titanium Nitride (AlTiN)-Coated Carbide—6 Flutes

16	16	32	92	Variable	36°	3°	Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Ball	8745A112	0000000

Roughing High-Speed Steel Square End Mills

4 Flutes

Serrations along the cutting edge act as chip breakers, so these end mills can remove large amounts of material at high speeds. They are high-speed steel for general purpose milling in most material, such as aluminum, brass, bronze, iron, and steel. Their square end makes them good for milling square slots 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.

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 Pitch	Flute Spacing	Helix Angle	For Use On	End Mill Type	Cut Style		Each
Uncoated High-Speed Steel







				4 Flutes

				16	-0.125 to 0.125	16	32	92	Fine	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	8819A817	000000

Fast-Cut Roughing Carbide Square End Mills with Chamfer Corner

Serrations along the cutting edge act as chip breakers, so these end mills can remove large amounts of material at high speeds without sacrificing tool life. Variable spacing between the flutes reduces vibration, also allowing these end mills to provide fast cuts. A 45° corner chamfer improves cutting edge strength, so these end mills last longer than standard square end mills when milling hard material; however they do not create as sharp of a corner. With a high helix angle and wear-resistant titanium aluminum nitride (TiAlN) or aluminum titanium nitride (AlTiN) coating, these end mills provide excellent shearing and chip removal in stainless steel and titanium. They have a square end for milling square-bottomed slots, pockets, and edges. All are center cutting, allowing plunge cuts into a surface.

Made of solid carbide, these end mills are harder, stronger, and more wear resistant than high-speed steel and cobalt steel for the longest life and best finish on hard material. Their extreme hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent the end mill from breaking.

	Mill, mm
	Dia.	Dia. Tolerance	Shank Dia., mm	Lg. of Cut, mm	Overall Lg., mm	Flute Pitch	Chamfer Wd., mm	Corner Cutting Angle	Flute Spacing	Helix Angle	For Use On	End Mill Type	Cut Style		Each
Aluminum Titanium Nitride (AlTiN)-Coated Carbide







				4 Flutes

				16	-0.07 to 0.000	16	32	92	Coarse	0.5	45°	Variable	36° to 38°	Iron, Stainless Steel, Steel, Titanium	Center Cutting	Square	8207A112	0000000


				18	-0.07 to 0.000	18	32	92	Coarse	0.5	45°	Variable	36° to 38°	Iron, Stainless Steel, Steel, Titanium	Center Cutting	Square	8207A113	000000

Fast-Cut Carbide Square End Mills

Square Cut Style

4 Flutes

6 Flute

7 Flutes

9 Flutes

11 Flutes

Variable spacing between the flutes reduces vibration, allowing these end mills to provide fast cuts, smooth finishes, and long tool life on hard materials. Made of solid carbide, these end mills are harder, stronger, and more wear resistant than high-speed steel and cobalt steel for the longest life and best finish on hard material. Their extreme hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent the end mill from breaking. They have a square end for milling square-bottomed slots, pockets, and edges.

Aluminum Titanium Nitride (AlTiN)-Coated Carbide and Titanium Aluminum Nitride (TiAlN)-Coated Carbide—A titanium aluminum nitride (TiAlN) or aluminum titanium nitride (AlTiN) coating allows them to dissipate heat better than other end mills, especially at high speeds. At high temperatures, the coating creates a layer of aluminum oxide that transfers heat to the chips, keeping the tool cool, even when used without lubrication. Aluminum titanium nitride (AlTiN) has a higher percentage of aluminum than titanium aluminum nitride (TiAlN).

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

Noncenter Cutting—Noncenter-cutting end mills are for operations where the peripheral teeth do most of the work, such as shoulder milling, contouring, and finishing. They cannot be used for plunge cuts.

Overall Lg., mm	Flute Spacing	Helix Angle	For Use On	End Mill Type	Cut Style		Each







Titanium Aluminum Nitride (TiAlN)-Coated Carbide—4 Flutes

16	16	32	92	Variable	35° to 38°	Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	8745A641	0000000


18	18	32	92	Variable	35° to 38°	Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	8745A642	000000




		Aluminum Titanium Nitride (AlTiN)-Coated Carbide—6 Flutes

		16	16	32	92	Variable	41°	Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	8745A786	000000




				Aluminum Titanium Nitride (AlTiN)-Coated Carbide—7 Flutes

				16	16	32	92	Variable	40°	Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Square	4677N15	000000




						Aluminum Titanium Nitride (AlTiN)-Coated Carbide—9 Flutes

						16	16	32	92	Variable	38°	Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Square	4677N18	000000




								Aluminum Titanium Nitride (AlTiN)-Coated Carbide—11 Flutes

								16	16	32	92	Variable	38°	Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Square	4677N19	000000

Fast-Cut Carbide Rounded-Edge Square End Mills

Rounded-Edge-Square

Cut Style

5 Flutes

End Mill with Coolant Hole

Variable spacing between the flutes reduces vibration, allowing these end mills to provide fast cuts, smooth finishes, and long tool life on hard materials. Often used for slotting and pocketing cuts in mold and die making, these end mills have a 90° profile and rounded corners, which reduce flute breakage and chipping. Also known as corner radius end mills.

A titanium aluminum nitride (TiAlN) or aluminum titanium nitride (AlTiN) coating allows them to dissipate heat better than other end mills, especially at high speeds. At high temperatures, the coating creates a layer of aluminum oxide that transfers heat to the chips, keeping the tool cool, even when used without lubrication. This makes these good for aggressive machining while roughing or making interrupted cuts.

End Mills for Coolant Holes—End mills with coolant holes allow coolant to run through the tool and directly to the cutting edge to help flush out chips. Use them in CNC machines with coolant-through technology.

	Corner Cut Radius, mm	Overall Lg., mm	Flute Spacing	Helix Angle	Max. Ramping Angle	No. of Coolant Holes	For Use On	End Mill Type	Cut Style		Each
End Mills for Coolant Holes







	Aluminum Titanium Nitride (AlTiN)-Coated Carbide—5 Flutes

	16	16	35	1	92	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	6646N151	0000000


	16	16	35	1.5	92	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	6646N152	000000
	16	16	35	2	92	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	6646N156	000000
	16	16	35	2.5	92	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	6646N153	000000
	16	16	35	3	92	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	6646N154	000000
	16	16	35	4	92	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	6646N155	000000
	20	20	23	1	92	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	6646N164	000000

Fast-Cut Carbide Square End Mills with Chamfer Corner

4 Flutes

6 Flutes

End Mill with Coolant

Holes

A 45° corner chamfer improves cutting edge strength, so these end mills last longer than standard square end mills when milling hard material; however they do not create as sharp of a corner. Variable spacing between the flutes reduces vibration, allowing these end mills to provide fast cuts, smooth finishes, and long tool life on hard materials. They have a square end for milling square-bottomed slots, pockets, and edges. All are center cutting, allowing plunge cuts into a surface.

Aluminum Titanium Nitride (AlTiN)-Coated Carbide and Titanium Aluminum Nitride (TiAlN)-Coated Carbide—Titanium aluminum nitride (TiAlN)- and aluminum titanium nitride (AlTiN)-coated end mills dissipate heat better than other end mills, especially at high speeds. At high temperatures, the coating creates a layer of aluminum oxide that transfers heat to the chips, keeping the tool cool, even when used without lubrication.

Titanium Aluminum Silicon Nitride (TiAlSiN)-Coated Carbide—Titanium aluminum silicon nitride (TiAlSiN)-coated end mills are extremely resistant to wear and diffusion because they have especially high hardness, even at high temperatures.

	Overall Lg., mm	Chamfer Wd., mm	Corner Cutting Angle	Flute Spacing	Helix Angle	No. of Coolant Holes	For Use On	End Mill Type		Each
End Mills







	Aluminum Titanium Nitride (AlTiN)-Coated Carbide—4 Flutes

	16	16	32	92	0.5	45°	Variable	38°	—	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	8745A126	0000000


	18	18	32	92	0.5	45°	Variable	38°	—	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	8745A127	000000




			Titanium Aluminum Nitride (TiAlN)-Coated Carbide—6 Flutes

			16	16	32	92	0.15	45°	Variable	45°	—	Stainless Steel, Titanium	Center Cutting	8207A537	000000




					Titanium Aluminum Silicon Nitride (TiAlSiN)-Coated Carbide—4 Flutes

					15.6	16	32	92	0.16	45°	Variable	36° to 38°	—	Iron, Nickel, Stainless Steel, Steel, Titanium	Center Cutting	8745A362	000000


					16	16	32	92	0.16	45°	Variable	36° to 38°	—	Iron, Nickel, Stainless Steel, Steel, Titanium	Center Cutting	8745A363	000000




							Titanium Aluminum Silicon Nitride (TiAlSiN)-Coated Carbide—3 Flutes

							16	16	32	92	0.19	45°	Variable	41° to 45°	—	Iron, Nickel, Stainless Steel, Steel, Titanium	Center Cutting	8745A342	000000


							End Mills for Coolant Holes







											Titanium Aluminum Silicon Nitride (TiAlSiN)-Coated Carbide—4 Flutes

											16	16	32	92	0.16	45°	Variable	36° to 38°	4	Iron, Nickel, Stainless Steel, Steel, Titanium	Center Cutting	8745A389	000000




													Titanium Aluminum Silicon Nitride (TiAlSiN)-Coated Carbide—3 Flutes

													16	16	32	92	0.19	45°	Variable	41° to 45°	3	Iron, Nickel, Stainless Steel, Steel, Titanium	Center Cutting	8745A377	000000