12mm End Mills | McMaster-Carr

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Carbide Square End Mills


2 Flutes	3 Flutes	4 Flutes

For longer tool life and a better finish in general purpose milling applications, these solid carbide end mills are harder, stronger, and more wear resistant than high-speed steel and cobalt steel end mills. 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.

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 Nitride (TiN)-Coated Carbide—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. They’re more wear resistant than uncoated end mills.

Titanium Carbon Nitride (TiCN)-Coated Carbide—Titanium carbon nitride (TiCN)-coated end mills 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. Use coated end mills for demanding, high-speed jobs in hard material as well as for longer production runs. They’re more wear resistant than uncoated end mills.

Titanium Aluminum Nitride (TiAlN)-Coated Carbide—Titanium aluminum nitride (TiAlN)-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. They’re more wear resistant than uncoated end mills.

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 Carbide







				2 Flutes

				12	-0.0510 to 0.0000	12	25	74	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8940A38	0000000


				12	-0.0510 to 0.0000	12	76	150	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8940A39	000000




						3 Flutes

						12	-0.0510 to 0.0000	12	25	74	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8945A38	000000


						12	-0.0510 to 0.0000	12	76	150	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8945A39	000000




								4 Flutes

								12	-0.0510 to 0.0000	12	25	74	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	29605A27	000000


								12	-0.0510 to 0.0000	12	76	150	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	29605A48	000000


								Titanium Nitride (TiN)-Coated Carbide







												2 Flutes

												12	-0.0510 to 0.0000	12	25	74	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8866A381	000000


												12	-0.0510 to 0.0000	12	76	150	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8866A391	000000




														3 Flutes

														12	-0.0510 to 0.0000	12	25	74	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8931A381	000000


														12	-0.0510 to 0.0000	12	76	150	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8931A391	000000




																4 Flutes

12	-0.0510 to 0.0000															12	25	74	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8780A381	000000


12	-0.0510 to 0.0000															12	76	150	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8780A391	000000


Titanium Carbon Nitride (TiCN)-Coated Carbide







																2 Flutes

				12	-0.0510 to 0.0000											12	25	74	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Ultra Tool	8866A382	000000


				12	-0.0510 to 0.0000											12	76	150	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Ultra Tool	8866A392	000000




																3 Flutes

						12	-0.0510 to 0.0000									12	25	74	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Ultra Tool	8931A382	000000


						12	-0.0510 to 0.0000									12	76	150	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Ultra Tool	8931A392	000000




																4 Flutes

								12								-0.0510 to 0.0000	12	25	74	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Ultra Tool	8780A382	000000


								12	-0.0510 to 0.0000							12	76	150	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Ultra Tool	8780A392	000000


								Titanium Aluminum Nitride (TiAlN)-Coated Carbide







																2 Flutes

												12				-0.0510 to 0.0000	12	25	74	Equal	30°	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8866A383	000000


												12	-0.0510 to 0.0000			12	76	150	Equal	30°	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8866A393	000000




																3 Flutes

														12	-0.0510 to 0.0000	12	25	74	Equal	30°	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8931A383	000000


														12	-0.0510 to 0.0000	12	76	150	Equal	30°	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8931A393	000000




																4 Flutes

12	-0.0510 to 0.0000															12	25	74	Equal	30°	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8780A383	000000


12	-0.0510 to 0.0000															12	76	150	Equal	30°	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8780A393	000000

High-Speed Steel Square End Mills

2 Flutes

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.

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

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’re more wear resistant than uncoated end mills, which means they last longer when run at similar 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 Spacing	Helix Angle	For Use On	End Mill Type	Cut Style	Mfr.		Each
Uncoated High-Speed Steel







				2 Flutes

				12	0.000 to 0.025	9.5	25.4	76	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	HTC Tool-Cutter Manufacturing	8853A79	000000




						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	Cleveland	8854A25	00000


						Titanium Nitride (TiN)-Coated High-Speed Steel







										2 Flutes

										12	0.000 to 0.025	9.5	25.4	76	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Tool Steel	Center Cutting	Square	HTC Tool-Cutter Manufacturing	8694A32	00000

Fast-Cut Carbide Rounded-Edge Square End Mills

Rounded-Edge-Square

Cut Style

5 Flutes

End Mills with Coolant

Holes

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 with 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.

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.

	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	Mfr.		Each
End Mills with 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	Kyocera	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	Kyocera	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	Kyocera	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	Kyocera	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	Kyocera	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	Kyocera	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	Kyocera	6646N123	000000

Carbide Square End Mills for Honeycomb Panels

9 Flutes

Cut into the sides and make slots in honeycomb panels without damaging any layers. Honeycomb panels are commonly used in aerospace and automotive applications because they’re strong yet lightweight, but these same qualities make them difficult to machine. Unlike normal end mills, these have a left-hand helix and push material downward as they cut, preventing layers of the composite material from separating. The serrated edges break the honeycomb into small pieces, minimizing uncut fibers that can occur in composite material. A diamond coating on these end mills allows them to machine abrasive material, such as carbon fiber, fiberglass, and graphite.

They have a square end for milling square-bottomed slots, pockets, and edges. All are center cutting, allowing plunge cuts into a surface. They are good for long production runs. They run twice as fast as other carbide end mills and last up to 30 times longer.

	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
Diamond-Coated Carbide







				9 Flutes

				12	-0.02 to 0.08	12	36	110	Equal	15°	Carbon Fiber, Fiberglass, Graphite	Center Cutting	Square	Seco	8388N14	0000000

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.

Overall Lg., mm	Flute Spacing	Helix Angle	For Use On	End Mill Type	Cut Style	Mfr.		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	M. A. Ford	8745A639	0000000




		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	Kyocera	8745A785	000000




				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	Ultra Tool	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	Ultra Tool	4677N17	000000

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	Mfr.		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	Guhring	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	Guhring	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	Guhring	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	Guhring	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	Guhring	8211N51	000000

Carbide Square End Mills for Aluminum, Brass, and Bronze

3 Flutes

Either an aluminum non-ferrous (ANF) coating or a titanium carbon nitride (TiCN) coating prevents soft material, such as aluminum, brass, and bronze, from accumulating on the cutting edge and creating an uneven finish. 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. 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. All are center cutting, allowing plunge cuts into a surface.

3 Flutes—End mills with three 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
Titanium Carbon Nitride (TiCN)-Coated Carbide







				3 Flutes

				12	-0.007 to 0.000	12	50	100	Equal	45°	Aluminum, Brass, Bronze	Center Cutting	Square	Ultra Tool	8829A115	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	Mfr.		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	Guhring	8581A103	0000000


				12	-0.07 to 0.000	12	36	93	Coarse	Variable	30° to 32°	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Guhring	8581A111	000000

Carbide Ball End Mills

Ball Cut Style

2 Flutes

4 Flutes

For longer tool life and a better finish in general purpose milling applications, these solid carbide end mills are harder, stronger, and more wear resistant than high-speed steel and cobalt steel end mills. 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.

Uncoated Carbide—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 Carbide







				2 Flutes

				12	-0.0510 to 0.0000	12	25	74	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Ball	Ultra Tool	8878A116	0000000




						4 Flutes

						12	-0.0510 to 0.0000	12	25	74	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Ball	Ultra Tool	8878A162	000000

Carbide Drill/Mill End Mills


Drill/Mill Cut Style	4 Flutes

Made of solid carbide, these end mills are harder, stronger, and more wear resistant than 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 90° pointed tip allows them to be used for drilling as well as for slotting, profiling, and chamfering cuts. All are center cutting, allowing plunge cuts into a surface.

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

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	Point Angle	Helix Angle	For Use On	End Mill Type	Cut Style	Mfr.		Each
Uncoated Carbide







				4 Flutes

				12	-0.051 to 0.000	12	25	74	Equal	90°	30°	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Drill/Mill	Ultra Tool	8747A316	0000000

Carbide Chamfering End Mills

Chamfering Cut

Style

2 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. They have an angled profile for making chamfer, bevel, and other angled cuts.

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

Titanium Aluminum Nitride (TiAlN)-Coated Carbide—Use titanium aluminum nitride (TiAlN)-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. 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.

2 Flutes—End mills with two or three flutes provide better chip clearance for high-volume, high-speed roughing cuts.

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	For Use On	Cut Style	Mfr.		Each
Uncoated Carbide







				2 Flutes—60° Cutting Angle

				12	-0.007 to 0.000	12	10.39	74	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Chamfering	Ultra Tool	3073A134	0000000




						2 Flutes—82° Cutting Angle

						12	-0.007 to 0.000	12	6.9	74	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Chamfering	Ultra Tool	3073A147	000000




								2 Flutes—90° Cutting Angle

								12	-0.007 to 0.000	12	6	74	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Chamfering	Ultra Tool	3073A161	000000




										4 Flutes—60° Cutting Angle

										12	-0.007 to 0.000	12	10.39	74	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Chamfering	Ultra Tool	3073A174	000000




												4 Flutes—82° Cutting Angle

												12	-0.007 to 0.000	12	6.9	74	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Chamfering	Ultra Tool	3073A187	000000




														4 Flutes—90° Cutting Angle

														12	-0.007 to 0.000	12	6	74	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Chamfering	Ultra Tool	3073A201	000000


														Titanium Aluminum Nitride (TiAlN)-Coated Carbide







																		2 Flutes—60° Cutting Angle

																		12	-0.007 to 0.000	12	10.39	74	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Chamfering	Ultra Tool	3073A141	000000




																				2 Flutes—82° Cutting Angle

12																				-0.007 to 0.000	12	6.9	74	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Chamfering	Ultra Tool	3073A154	000000




		2 Flutes—90° Cutting Angle

		12	-0.007 to 0.000																	12	6	74	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Chamfering	Ultra Tool	3073A167	000000




																				4 Flutes—60° Cutting Angle

				12	-0.007 to 0.000															12	10.39	74	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Chamfering	Ultra Tool	3073A181	000000




																				4 Flutes—82° Cutting Angle

						12	-0.007 to 0.000													12	6.9	74	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Chamfering	Ultra Tool	3073A194	000000




																				4 Flutes—90° Cutting Angle

								12	-0.007 to 0.000											12	6	74	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Chamfering	Ultra Tool	3073A207	000000

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	Mfr.		Each
Aluminum Titanium Nitride (AlTiN)-Coated Carbide







				5 Flutes

				12	-0.05 to 0.000	12	32	75	Equal	45°	Stainless Steel, Titanium	Center Cutting	Square	Garr Tool	8883A27	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	Mfr.		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	Melin Tool	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	Melin Tool	8933A98	000000

Fast-Cut Carbide Square End Mills with Chamfer Corner

4 Flutes

6 Flutes

Ramping Cut Shown

End Mills 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.

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







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

	12	12	26	83	0.35	45°	Variable	36° to 38°	—	Stainless Steel, Titanium	Center Cutting	Guhring	8207A477	0000000




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

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




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

					12	12	26	83	0.12	45°	Variable	36° to 38°	—	Iron, Nickel, Stainless Steel, Steel, Titanium	Center Cutting	Guhring	8745A358	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	Guhring	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	Widia	8745A136	000000


											End Mills with 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	Guhring	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	Guhring	8745A376	000000

Long-Reach Carbide Ball End Mills for Mold Making

Ball Cut Style

2 Flutes

3 Flutes

4 Flutes

These end mills have an extended neck with a reduced diameter that prevents them from rubbing against your workpiece when deep milling. Also known as runner cutters, they cut channels with precise angles and dimensions, reducing the need for additional finishing. 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—Use aluminum titanium nitride (AlTiN)-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. 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.

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







				2 Flutes

				12	0.0000 to 0.0991	12	11.5	58	22	130	Equal	30°	Aluminum, Brass, Bronze, Copper, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Ball	Titan USA	8086N46	0000000


				Aluminum Titanium Nitride (AlTiN)-Coated Carbide







								3 Flutes

								12	0.0000 to 0.0991	12	11.5	58	22	130	Equal	30°	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Ball	Titan USA	8086N71	000000




										4 Flutes

										12	0.0000 to 0.0991	12	11.5	58	22	130	Equal	30°	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Ball	Titan USA	8086N72	000000

Carbide Square End Mills with Chamfer Corner for Stainless Steel and Titanium

Get longer life when milling hard material with these end mills—their 10° corner chamfer has a stronger cutting edge compared to standard square end mills. However, they don’t create as sharp of a corner. Grooves on the shank allow coolant to flow directly to the cutting edge, helping to reduce heat, extend tool life, and improve the evacuation of chips. This makes these end mills able to cut materials that are difficult to machine, such as stainless steel, titanium, and hardened steel. They have a square end for milling square-bottomed slots, pockets, and edges. Unlike typical noncenter-cutting end mills, these are designed for heavy plunge cuts.

A titanium aluminum nitride (TiAlN) 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.

	Mill, mm
	Dia.	Dia. Tolerance	Shank Dia., mm	Lg. of Cut, mm	Overall Lg., mm	Chamfer Wd., mm	Corner Cutting Angle	Flute Spacing	Helix Angle	No. of Coolant Grooves	For Use On	End Mill Type	Cut Style	Mfr.		Each
Titanium Aluminum Nitride (TiAlN)-Coated Carbide







				4 Flutes

				12	-0.02 to 0	12	4	117	1.4	10°	Equal	0°	4	Hardened Steel, Nickel, Stainless Steel, Titanium	Noncenter Cutting	Square	Sandvik Coromant	8425N15	0000000

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

				12	0.0000 to 0.0760	12.7	20.6	105	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Regal Cutting Tools	8855A71	000000

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

				12	-0.0380 to 0.0000	12.7	25.4	105	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Melin Tool	8891A41	000000

Long-Reach Fast-Cut Carbide Square End Mills


Square Cut Style

These end mills have a neck that’s extended and has a reduced diameter—this prevents them from rubbing against your workpiece when deep milling. Variable spacing between the flutes reduces vibration, allowing the 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.

An 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.

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







				6 Flutes

				12	-0.05 to 0.000	12	11.4	33	15	100	Variable	41°	Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Kyocera	8154N107	0000000

Carbide Square End Mills for Carbon Fiber, Fiberglass, and Graphite

4 Flutes

A diamond or diamondlike coating on these end mills makes them good for machining abrasive material, such as carbon fiber, fiberglass, and graphite. 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. All are center cutting, allowing plunge cuts into a surface.

Diamondlike Carbon (DLC)-Coated Carbide—Diamondlike carbon (DLC)-coated end mills are an economical option for short runs and intermittent use.

Diamond-Coated Carbide—Diamond-coated end mills are good for long production runs. They run twice as fast as other carbide end mills and last up to 30 times longer.

	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
Diamondlike Carbon (DLC)-Coated Carbide







				4 Flutes

				12	-0.012 to 0.012	12	32	74	Equal	33°	Carbon Fiber, Fiberglass, Graphite	Center Cutting	Square	Ultra Tool	4119A823	0000000


				Diamond-Coated Carbide







								4 Flutes

								12	-0.025 to 0	12	25	100	Equal	30°	Carbon Fiber, Fiberglass, Graphite	Center Cutting	Square	RobbJack	3725A315	000000

Carbide Rounded-Edge Square End Mills for Carbon Fiber, Fiberglass, and Graphite


Rounded-Edge-Square Cut Style

A diamond coating on these end mills allows them to machine abrasive material, such as carbon fiber, fiberglass, and graphite. Good for long production runs, they run twice as fast as other carbide end mills and last up to 30 times longer. These end mills are made of solid carbide, making them harder, stronger, and more wear resistant than high-speed steel and cobalt steel for the longest life and best finish on materials. 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.

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. All are center cutting, allowing plunge cuts into a surface.

	Mill, mm
	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	Mfr.		Each
Diamond-Coated Carbide







				4 Flutes

				12	-0.05 to 0	12	12	0.5	150	Equal	30°	Carbon Fiber, Fiberglass, Graphite	Center Cutting	Rounded-Edge Square	OSG USA	8215A19	0000000


				12	-0.05 to 0	12	12	1	150	Equal	30°	Carbon Fiber, Fiberglass, Graphite	Center Cutting	Rounded-Edge Square	OSG USA	8215A21	000000

Roughing Carbide Square End Mills

Serrations along the cutting edge act as chip breakers, so these end mills can remove large amounts of material at high speeds. Made of solid carbide, they 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. All are center cutting, allowing plunge cuts into a surface.

Titanium Nitride (TiN)-Coated Carbide—Titanium nitride (TiN)-coated end mills have good wear resistance.

	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	Mfr.		Each
Titanium Nitride (TiN)-Coated Carbide







				4 Flutes

				12	-0.089 to 0.0000	12	25	74	Coarse	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	87825A414	0000000


				Titanium Aluminum Nitride (TiAlN)-Coated Carbide







								4 Flutes

								12	-0.089 to 0.0000	12	25	74	Coarse	Equal	30°	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	87825A422	000000

Carbide Ball End Mills for Tool Steel, Hardened Steel, and Iron


Ball Cut Style

Flutes have a low helix angle to provide the cutting forces required for difficult-to-machine material, such as hardened steel and iron. 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—An aluminum titanium nitride (AlTiN) or aluminum chromium nitride (AlCrN) 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.

	Mill											For Maximum Hardness Rockwell C52
	Dia., mm	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
Aluminum Titanium Nitride (AlTiN)-Coated Carbide







				2 Flutes

				12	-0.001" to 0.000"	12	12	100	Equal	15°	Hardened Steel, Iron, Tool Steel	Center Cutting	Ball	Seco	8942A37	0000000

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	Mfr.		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	Kyocera	8745A111	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.

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	Mfr.		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	Melin Tool	8819A814	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.

	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	Mfr.		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	Guhring	8207A109	0000000