83mm 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

				4.0	0.1575"	83	49.2	Round	4 mm	Split	30565A261	00000	10	30565A429	000000


				4.1	0.1614"	83	49.2	Round	4.1 mm	Split	30565A262	0000	—	———	0
				4.2	0.1654"	83	49.2	Round	4.2 mm	Split	30565A263	0000	10	30565A43	00000
				4.3	0.1693"	83	49.2	Round	4.3 mm	Split	30565A264	0000	10	30565A431	00000




						Uncoated

						4.0	0.1575"	83	42.9	Round	4 mm	Standard	2951A132	0000	—	———	0

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

				4.0	0.1575"	83	54	Round	4 mm	Split	3474A54	000000	000000

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

				5.0	0.1969"	83	43.9	Round	6 mm	Four Facet	2396N26	000000


				6.0	0.2362"	83	43.9	Round	6 mm	Four Facet	2396N268	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		Each
Uncoated Cobalt Steel







				4 Flutes

				5	-0.0380 to 0.0000	9.5	14.3	83	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	8891A33	000000

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

12	12	26	83	Variable	36°	3°	Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Ball	8745A111	0000000

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

				12	-0.07 to 0.000	12	26	83	Coarse	Variable	30° to 32°	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	8581A103	0000000

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		Each
Uncoated High-Speed Steel







				4 Flutes

				12	0.000 to 0.038	12.7	31.8	83	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	8854A25	000000

Cobalt Steel Square End Mills

4 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, hardened steel, titanium, and tool steel. They have a square end for milling square slots, pockets, and edges.

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

Titanium Carbon Nitride (TiCN)-Coated Cobalt Steel—Use titanium carbon nitride (TiCN)-coated end mills for demanding, high-speed jobs in hard material as well as for longer production runs. They have a hard, smooth finish that resists chipping and wear and prevents material from accumulating on the cutting edge. They’re especially good for use in aluminum.

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		Each
Uncoated Cobalt Steel







				4 Flutes

				12	0.000 to 0.051	12	26	83	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	3057A69	000000


				Titanium Carbon Nitride (TiCN)-Coated Cobalt Steel







								4 Flutes

								12	0.000 to 0.051	12	26	83	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	8933A98	00000

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.

	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

				12	-0.07 to 0.000	12	26	83	Coarse	0.5	45°	Variable	36° to 38°	Iron, Stainless Steel, Steel, Titanium	Center Cutting	Square	8207A109	0000000


				14	-0.07 to 0.000	14	26	83	Coarse	0.5	45°	Variable	36° to 38°	Iron, Stainless Steel, Steel, Titanium	Center Cutting	Square	8207A111	000000

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		Each
Uncoated High-Speed Steel







				2 Flutes

				4	0.0000 to 0.0760	9.5	11.1	83	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	8855A59	000000


				5	0.0000 to 0.0760	9.5	11.1	83	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	8855A62	00000

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.

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

				12	-0.125 to 0.125	12	26	83	Fine	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	8819A814	000000


				14	-0.125 to 0.125	12	26	83	Fine	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	8819A815	00000
				15	-0.125 to 0.125	12	26	83	Fine	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	8819A816	00000

Carbide Rounded-Edge Square End Mills for Copy Milling

Rounded-Edge

Square Cut Style

Replicate the shape of complex parts with these end mills. Also known as torus end mills, they have a rounded edge for precision contouring. These end mills are also used for slotting and pocketing cuts in mold and die making. Their 90° profile and rounded corners reduce flute breakage and chipping. 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. A titanium aluminum silicon nitride (TiAlSiN) coating makes them extremely resistant to wear and diffusion because they have especially high hardness, even at high temperatures.

	Mill, mm											For Maximum Hardness Rockwell C65
	Dia.	Dia. Tolerance	Shank Dia., mm	Lg. of Cut, mm	Corner Cut Radius, mm	Overall Lg., mm	Flute Spacing	Helix Angle	For Use On	End Mill Type	Cut Style		Each
Titanium Aluminum Silicon Nitride (TiAlSiN)-Coated Carbide







				4 Flutes

				12	-0.035 to -0.013	12	12	0.5	83	Equal	30°	Hardened Steel, Iron, Steel, Tool Steel	Center Cutting	Rounded-Edge Square	8211N47	0000000


				12	-0.035 to -0.013	12	12	1	83	Equal	30°	Hardened Steel, Iron, Steel, Tool Steel	Center Cutting	Rounded-Edge Square	8211N48	000000
				12	-0.035 to -0.013	12	12	2	83	Equal	30°	Hardened Steel, Iron, Steel, Tool Steel	Center Cutting	Rounded-Edge Square	8211N46	000000
				12	-0.035 to -0.013	12	12	3	83	Equal	30°	Hardened Steel, Iron, Steel, Tool Steel	Center Cutting	Rounded-Edge Square	8211N49	000000
				12	-0.035 to -0.013	12	12	4	83	Equal	30°	Hardened Steel, Iron, Steel, Tool Steel	Center Cutting	Rounded-Edge Square	8211N51	000000

Fast-Cut Carbide Square End Mills

Square Cut Style

4 Flutes

6 Flute

7 Flutes

9 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

12	12	26	83	Variable	35° to 38°	Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	8745A639	000000


14	14	26	83	Variable	35° to 38°	Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	8745A64	000000




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

		12	12	26	83	Variable	41°	Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	8745A785	00000




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

				12	12	26	83	Variable	40°	Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Square	4677N14	000000




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

						12	12	26	83	Variable	38°	Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Square	4677N17	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

	12	12	26	0.5	83	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	6646N117	0000000


	12	12	26	0.76	83	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	6646N118	000000
	12	12	26	1	83	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	6646N119	000000
	12	12	26	1.5	83	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	6646N12	000000
	12	12	26	2	83	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	6646N121	000000
	12	12	26	2.5	83	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	6646N122	000000
	12	12	26	3	83	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	6646N123	000000

Fast-Cut Carbide Square End Mills with Chamfer Corner

4 Flutes

6 Flutes

Ramping Cut Shown

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.

End Mills for Extreme Ramping and Plunging—End mills for extreme ramping and plunging are good for both angled and vertical cutting. Choose these end mills so you can have one tool for ramping and plunging. They can enter the material at up to a 45° ramping angle to reach your desired depth faster than standard end mills, which typically machine at 1° to 3° angles. These end mills also evacuate chips faster and last longer.

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.

	Mill Dia., mm	Shank Dia., mm	Lg. of Cut, mm	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

				11	12	26	83	0.35	45°	Variable	36° to 38°	—	Stainless Steel, Titanium	Center Cutting	8207A476	0000000


				12	12	26	83	0.35	45°	Variable	36° to 38°	—	Stainless Steel, Titanium	Center Cutting	8207A477	000000
				14	14	26	83	0.5	45°	Variable	38°	—	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	8745A125	000000




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

						12	12	26	83	0.15	45°	Variable	45°	—	Stainless Steel, Titanium	Center Cutting	8207A535	000000




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

								11.7	12	26	83	0.12	45°	Variable	36° to 38°	—	Iron, Nickel, Stainless Steel, Steel, Titanium	Center Cutting	8745A357	000000


								12	12	26	83	0.12	45°	Variable	36° to 38°	—	Iron, Nickel, Stainless Steel, Steel, Titanium	Center Cutting	8745A358	000000
								13.7	14	26	83	0.14	45°	Variable	36° to 38°	—	Iron, Nickel, Stainless Steel, Steel, Titanium	Center Cutting	8745A359	000000
								14	14	26	83	0.14	45°	Variable	36° to 38°	—	Iron, Nickel, Stainless Steel, Steel, Titanium	Center Cutting	8745A361	000000




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

										12	12	26	83	0.18	45°	Variable	41° to 45°	—	Iron, Nickel, Stainless Steel, Steel, Titanium	Center Cutting	8745A341	000000


										End Mills for Extreme Ramping and Plunging







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

														12	12	24	83	0.3	45°	Variable	37° to 39°	—	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	8745A136	00000


														End Mills for Coolant Holes







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

12	12																	26	83	0.12	45°	Variable	36° to 38°	4	Iron, Nickel, Stainless Steel, Steel, Titanium	Center Cutting	8745A388	000000




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

		12	12															26	83	0.18	45°	Variable	41° to 45°	3	Iron, Nickel, Stainless Steel, Steel, Titanium	Center Cutting	8745A376	000000

High-Speed Steel Corner-Rounding End Mills

Corner-Rounding Cut

Style

Use these versatile end mills for milling in most material, including aluminum, brass, bronze, iron, and steel. They have scooped corners for rounding the sharp edges of your workpiece.

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—Titanium nitride (TiN)-coated end mills create less friction than uncoated end mills, which means they last longer when run at similar speeds. Use coated end mills for demanding, high-speed jobs in hard material as well as for longer production runs. The coating reduces friction and vibration as they’re used, making them more wear resistant than uncoated end mills.

Aluminum Titanium Nitride (ALTiN)-Coated High-Speed Steel—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. Use coated end mills for demanding, high-speed jobs in hard material as well as for longer production runs. The coating reduces friction and vibration as they’re used, making them more wear resistant than uncoated end mills.

									Uncoated High-Speed Steel		Titanium Nitride (TiN)-Coated High-Speed Steel		Aluminum Titanium Nitride (ALTiN)-Coated High-Speed Steel
	Cut Radius, mm	Tip Dia., mm	Mill Dia., mm	Shank Dia., mm	Overall Lg., mm	Flute Spacing	For Use On	Cut Style		Each		Each		Each
4 Flutes



		6	10	25.4	19	83	Equal	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Corner Rounding	30245A41	0000000	8375N46	0000000	8412N46	0000000


		7	9.5	25.4	19	83	Equal	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Corner Rounding	30245A72	000000	8375N47	000000	8412N47	000000
		8	9	28.6	19	83	Equal	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Corner Rounding	30245A513	000000	8375N48	000000	8412N48	000000
		9	9	28.6	19	83	Equal	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Corner Rounding	30245A73	000000	8375N49	000000	8412N49	000000