65mm Long Drill Bits | McMaster-Carr

Extended Length—Drill through panels and thick workpieces with our longest bits. Their length is good for creating deep holes but makes them less rigid than other bits. As a result, they are more prone to wobbling or breaking, especially when drilling hard 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.

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		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







				Black Oxide

				3.1	0.122"	65	29.8	Round	3.1 mm	Standard	2958A62	00000	—	———	0


				3.2	0.126"	65	29.6	Round	3.2 mm	Standard	2958A63	0000	—	———	0
				3.3	0.1299"	65	29.4	Round	3.3 mm	Standard	2958A64	0000	10	2958A642	000000




						Titanium Nitride (TiN) Coated

						3.1	0.122"	65	29.8	Round	3.1 mm	Standard	8950A47	0000	—	———	0


						3.2	0.126"	65	29.6	Round	3.2 mm	Standard	8950A48	0000	—	———	0
						3.3	0.1299"	65	31	Round	3.3 mm	Standard	8950A13	0000	—	———	0


						Extended Length







										Uncoated

										1.25	0.0492"	65	41	Round	1.25 mm	Standard	2939A86	0000	—	———	0

High-Speed Steel Step Drill Bits


	Standard

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.

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







			Black Oxide

			4.0, 5.0, 6.0, 6.5, 8.0, 9.0, 10.0, 11.0, 12.0	0.1575", 0.1969", 0.2362", 0.2559", 0.315", 0.3543", 0.3937", 0.4331", 0.4724"	65	Round/3-Flat	6.4 mm	Standard	5910N19	000000


			4.0, 6.0, 8.0, 10.0, 12.0, 14.0, 16.0, 18.0, 20.0	0.1575", 0.2362", 0.315", 0.3937", 0.4724", 0.5512", 0.6299", 0.7087", 0.7874"	65	Round/3-Flat	6.4 mm	Standard	5910N21	00000

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

				3.1	0.122"	65	34	Parabolic	Round	3.1	Split	2771N734	00000


				3.2	0.126"	65	34	Parabolic	Round	3.2	Split	2771N735	0000
				3.25	0.128"	65	34	Parabolic	Round	3.25	Split	2771N736	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		Each
Jobbers' Length







				Titanium Nitride (TiN) Coated

				3.1	0.122"	65	36	Round	3.1 mm	Split	5058N27	00000


				3.2	0.126"	65	36	Round	3.2 mm	Split	5058N28	0000




						Titanium Aluminum Nitride (TiAlN) Coated

						3.1	0.122"	65	36	Round	3.1 mm	Split	2753A229	00000


						3.2	0.126"	65	36	Round	3.2 mm	Split	5058N145	00000
						3.3	0.1299"	65	31.1	Round	3.3 mm	Split	2753A165	00000




								Gold Oxide

								3.1	0.122"	65	29.8	Round	3.1 mm	Split	29355A52	0000


								3.2	0.126"	65	29.6	Round	3.2 mm	Split	29355A53	0000
								3.3	0.1299"	65	29.4	Round	3.3 mm	Split	29355A55	0000

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		1-9	10-Up
Jobbers' Length







				Black Oxide

				3.2	0.126"	65	12.8	Round	3.2 mm	Standard	29855A134	00000	00000


				3.3	0.13"	65	28.7	Round	3.3 mm	Standard	29855A53	0000	0000

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		Each
Jobbers' Length







				Titanium Aluminum Nitride (TiAlN) Coated

				3.3	0.1299"	65	36	Parabolic	Round	3.3	Split	3020A39	000000

Round-Shank Reamer Drill Bits for Taper-Pin Holes

Drill and ream holes for taper pins with the same tool. These tools have chip breakers on the cutting edge.

		Reamer Dia., mm		Lg., mm
	For Taper Pin No., mm	(A)	(B)	Flute	Overall	No. of Flutes	Flute Type	Spiral Direction	Rate of Taper	Point Angle	For Use On		Each
High-Speed Steel



		2	2.8400	1.9800	43	65	2	Spiral	Right Hand	1:50	118°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	8831A71	000000

Diamond-Coated Router Bits for Composites

With a diamond coating, these bits resist wear when used on abrasive materials, making them last about 50 times longer than uncoated bits. Their sharp cutting edges and flute shapes are specifically designed to cut through tough materials such as composites with minimal resistance. This means less strain on your router and more control when cutting, leading to a smooth cut. Bits are made of solid carbide for longer tool life and faster cutting speeds than high-speed steel.

Diamond-Coated Carbide


Drill/Mill Cut Style—Plunge-Cut	Drill/Mill Cut Style—Plunge-Cut, Straight Flutes

Drill/Mill Cut Style—Bits with a drill/mill cut style have a pointed end for easier plunge cuts than square-cut bits.

Plunge Cut—Plunge-cutting bits let you cut directly into the workpiece from above. Other bits are best for operations where the peripheral teeth do most of the work such as trimming, contouring, and finishing.

Straight Flutes—Bits with straight flutes are for general purpose use. They quickly remove material, leaving a rough finish.

	Overall Lg., mm	No. of Flutes	For Tool Type	For Use On		Each
Drill/Mill Cut Style—Plunge-Cut







	Straight Flutes

	6	18	6	65	8	CNC Machine	Fiber-Reinforced Plastic, Composite	6582N33	0000000

Carbide Tapered Square End Mills

Tapered Cut Style

3 Flutes

4 Flutes

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. Also known as taper degree end mills, they're often used to machine angled slots in dies and molds.

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 Carbide—Use uncoated end mills for general purpose milling and short production runs. They stay sharper than coated end mills when used on soft materials like aluminum, leaving a better finish.

Titanium Aluminum Nitride (TiAlN)-Coated Carbide—Titanium aluminum nitride (TiAlN)-coated end mills are better for demanding, high-speed jobs in hard material as well as for longer production runs. They 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.

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.

		Mill, mm
	Taper Angle per Side	Dia.	Dia. Tolerance	Max. Taper Dia., mm	Shank Dia., mm	Lg. of Cut, mm	Overall Lg., mm	Flute Spacing	For Use On	End Mill Type	Cut Style		Each
Uncoated Carbide







				3 Flutes

				20°	3	-0.051 to 0.051	11.7	12	12	65	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Tapered	8946A124	000000




						4 Flutes

						25°	3	-0.051 to 0.051	14.2	12	12	65	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Tapered	8946A125	000000


						30°	3	-0.051 to 0.051	16.8	12	12	65	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Tapered	8946A126	000000


						Titanium Aluminum Nitride (TiAlN)-Coated Carbide







										3 Flutes

										20°	3	-0.051 to 0.051	11.7	12	12	65	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Tapered	8172N77	000000




												4 Flutes

												25°	3	-0.051 to 0.051	14.2	12	12	65	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Tapered	8172N81	000000


												30°	3	-0.051 to 0.051	16.9	12	12	65	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Tapered	8172N82	000000

Fast-Cut Roughing Carbide Square End Mills

4 Flutes

Remove large amounts of material quickly without sacrificing tool life. Variable spacing between flutes reduces cutting time and vibration in high-volume jobs.

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 slots, pockets, and edges.

Titanium Aluminum Nitride (TiAlN)-Coated Carbide—End mills with a titanium aluminum nitride (TiAlN) coating and end mills with an aluminum titanium nitride (AlTiN) coating 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.

4 Flutes—End mills with four flutes have better chip clearance than end mills with five flutes, so they’re often used for high-volume, high-speed plunge, slotting, and roughing cuts. Serrations along the cutting edge act as chip breakers, so these end mills can remove large amounts of material 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
Titanium Aluminum Nitride (TiAlN)-Coated Carbide







				4 Flutes

				6	-0.048 to 0.000	6	18	65	Coarse	Variable	30° to 32°	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	8581A107	0000000

Cobalt Steel Tapered Square End Mills

Tapered Cut Style

3 Flutes

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 and steel. Also known as taper degree end mills, they're often used to machine angled slots in dies and molds.

Uncoated Cobalt Steel—Use uncoated end mills for general purpose milling and short production runs. They stay sharper than coated end mills when used on soft materials like aluminum, leaving a better finish.

Titanium Nitride (TiN)-Coated Cobalt Steel—Use titanium nitride (TiN)-coated end mills for demanding, high-speed jobs in hard material as well as for longer production runs. They create less friction than uncoated end mills, which means they last longer when run at similar speeds.

3 Flutes—End mills with three flutes provide better chip clearance for high-volume, high-speed plunge, slotting, and roughing cuts.

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

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







				3 Flutes

				20°	3	-0.0508 to 0.0508	11.7	10	12	65	Equal	Aluminum, Brass, Bronze, Copper, Fiberglass, Iron, Plastic, Steel	Center Cutting	Tapered	8147N812	000000


				Titanium Nitride (TiN)-Coated Cobalt Steel







								3 Flutes

								20°	3	-0.0508 to 0.0508	11.7	10	12	65	Equal	Aluminum, Brass, Bronze, Copper, Fiberglass, Iron, Plastic, Steel	Center Cutting	Tapered	8296N812	00000

High-Speed Steel Tapered Square End Mills


Tapered Cut Style	3 Flutes

Use these versatile end mills for milling in most material, including aluminum, brass, bronze, iron, and steel. Also known as taper degree end mills, they're often used to machine angled slots in dies and molds.

Uncoated High-Speed Steel—Use uncoated end mills for general purpose milling and short production runs. They stay sharper than coated end mills when used on soft materials like aluminum, leaving a better finish.

Titanium Nitride (TiN)-Coated High-Speed Steel—Use titanium nitride (TiN)-coated end mills for demanding, high-speed jobs in hard material as well as for longer production runs. They create less friction than uncoated end mills, which means they last longer when run at similar speeds.

3 Flutes—End mills with three flutes provide better chip clearance for high-volume, high-speed plunge, slotting, and roughing cuts.

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

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







				3 Flutes

				20°	3	-0.0508 to 0.0508	11.7	10	12	65	Equal	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Tapered	8936A128	000000


				Titanium Nitride (TiN)-Coated High-Speed Steel







								3 Flutes

								20°	3	-0.0508 to 0.0508	11.7	10	12	65	Equal	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Tapered	8045N87	00000

Carbide Square End Mills for Stainless Steel and Titanium

5 Flutes

With a wear-resistant coating and high helix angle, these end mills provide excellent shearing and chip removal in stainless steel and titanium. Made of solid carbide, they are harder, stronger, and more wear resistant than high-speed steel and cobalt steel end mills 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. The coating allows them to dissipate heat better than other end mills, especially at high speeds. At high temperatures, it creates a layer of aluminum oxide that transfers heat to the chips, keeping the tool cool, even when used without lubrication. End mills have a square end for milling square slots, pockets, and edges. All are center cutting, allowing plunge cuts into a surface.

Aluminum Titanium Nitride (AlTiN)-Coated Carbide—Aluminum titanium nitride (AlTiN)-coated end mills have a higher percentage of aluminum than titanium aluminum nitride (TiAlN)-coated end mills.

5 Flutes—End mills with five 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		Each
Aluminum Titanium Nitride (AlTiN)-Coated Carbide







				5 Flutes

				5	-0.05 to 0.000	6	16	65	Equal	45°	Stainless Steel, Titanium	Center Cutting	Square	8883A23	000000


				6	-0.05 to 0.000	6	20	65	Equal	45°	Stainless Steel, Titanium	Center Cutting	Square	8883A24	00000
				8	-0.05 to 0.000	8	21	65	Equal	45°	Stainless Steel, Titanium	Center Cutting	Square	8883A25	00000