16mm 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

				16	-0.0510 to 0.0000	16	38	89	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8940A42	0000000




						3 Flutes

						16	-0.0510 to 0.0000	16	38	89	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8945A42	000000




								4 Flutes

								16	-0.0510 to 0.0000	16	38	89	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	29605A29	000000


								Titanium Nitride (TiN)-Coated Carbide







												2 Flutes

												16	-0.0510 to 0.0000	16	38	89	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8866A421	000000




														3 Flutes

														16	-0.0510 to 0.0000	16	38	89	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8931A421	000000




																4 Flutes

																16	-0.0510 to 0.0000	16	38	89	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8780A421	000000


																Titanium Carbon Nitride (TiCN)-Coated Carbide







																				2 Flutes

																				16	-0.0510 to 0.0000	16	38	89	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Ultra Tool	8866A422	000000




																				3 Flutes

		16	-0.0510 to 0.0000																	16	38	89	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Ultra Tool	8931A422	000000




																				4 Flutes

				16	-0.0510 to 0.0000															16	38	89	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Ultra Tool	8780A422	000000


				Titanium Aluminum Nitride (TiAlN)-Coated Carbide







																				2 Flutes

																				16	-0.0510 to 0.0000	16	38	89	Equal	30°	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8866A423	000000




																				3 Flutes

										16										-0.0510 to 0.0000	16	38	89	Equal	30°	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8931A423	000000




																				4 Flutes

												16								-0.0510 to 0.0000	16	38	89	Equal	30°	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	8780A423	000000

Fast-Cut Carbide Square End Mills

Square Cut Style

4 Flutes

6 Flute

7 Flutes

9 Flutes

11 Flutes

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

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

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

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

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







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

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




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

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




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

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




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

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




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

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

				16	0.000 to 0.025	12.7	33.3	84	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Quinco Tool Products	8949A878	000000




						4 Flutes

						16	0.000 to 0.038	15.9	41.3	95	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Cleveland	8854A31	00000


						Titanium Nitride (TiN)-Coated High-Speed Steel







										2 Flutes

										16	0.000 to 0.025	12.7	33.3	84	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Tool Steel	Center Cutting	Square	Quinco Tool Products	8694A39	00000

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.

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.

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.

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.

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	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

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




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

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


				16	16	65	150	0.15	45°	Variable	45°	—	Stainless Steel, Titanium	Center Cutting	Guhring	8207A542	000000




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

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




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

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


								End Mills for Extreme Ramping and Plunging







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

												16	16	18	82	0.3	45°	Variable	37° to 39°	—	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Widia	8745A137	000000


												End Mills with Coolant Holes







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

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




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

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

Carbide Corner-Rounding End Mills with Two Milling Ends


Corner-Rounding Cut Style	3 Flutes

When one end wears out, switch to the opposite end for two times the life of a standard carbide end mill. 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 scooped corners for rounding the sharp edges of your workpiece.

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. The coating reduces friction and vibration as they’re used, making them 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. The coating reduces friction and vibration as they’re used, making them more wear resistant than uncoated end mills.

Aluminum Titanium Nitride (AlTiN)-Coated Carbide— 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. This makes these good for aggressive machining while roughing or making interrupted cuts. 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.

	Shank Dia., mm	Overall Lg., mm	Flute Spacing	For Use On	Cut Style	Mfr.		Each
Uncoated Carbide







	3 Flutes

	5	3	16	16	89	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Corner Rounding	Ultra Tool	8508A56	0000000


	6	3	16	16	89	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Corner Rounding	Ultra Tool	8508A57	000000


	Titanium Nitride (TiN)-Coated Carbide







					3 Flutes

					5	3	16	16	89	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Corner Rounding	Ultra Tool	8508A818	000000


					6	3	16	16	89	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Corner Rounding	Ultra Tool	8508A819	000000


					Titanium Carbon Nitride (TiCN)-Coated Carbide







									3 Flutes

									5	3	16	16	89	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Corner Rounding	Ultra Tool	8508A827	000000


									6	3	16	16	89	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Corner Rounding	Ultra Tool	8508A828	000000


									Aluminum Titanium Nitride (AlTiN)-Coated Carbide







													3 Flutes

													5	3	16	16	89	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Corner Rounding	Ultra Tool	8508A836	000000


													6	3	16	16	89	Equal	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Corner Rounding	Ultra Tool	8508A837	000000

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.

	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

	16	16	19	1	82	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	Kyocera	6646N15	0000000


	16	16	35	1	92	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	Kyocera	6646N151	000000
	16	16	35	1.5	92	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	Kyocera	6646N152	000000
	16	16	35	2	92	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	Kyocera	6646N156	000000
	16	16	35	2.5	92	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	Kyocera	6646N153	000000
	16	16	35	3	92	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	Kyocera	6646N154	000000
	16	16	35	4	92	Variable	37°	7°	1	Hardened Steel, Iron, Stainless Steel, Steel, Titanium, Tool Steel	Noncenter Cutting	Rounded-Edge Square	Kyocera	6646N155	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

				16	-0.02 to 0	16	5.3	144	1.9	10°	Equal	0°	4	Hardened Steel, Nickel, Stainless Steel, Titanium	Noncenter Cutting	Square	Sandvik Coromant	8425N16	000000000

Long-Reach Carbide Ball End Mills for Mold Making


Ball Cut Style	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.

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.

	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







				4 Flutes

				16	0.0000 to 0.0991	16	15.5	70	30	150	Equal	30°	Aluminum, Brass, Bronze, Copper, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Ball	Titan USA	8086N49	0000000

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

				16	-0.0510 to 0.0000	16	38	89	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Ball	Ultra Tool	8878A118	0000000




						4 Flutes

						16	-0.0510 to 0.0000	16	38	89	Equal	30°	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Ball	Ultra Tool	8878A164	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

				16	-0.05 to 0.000	16	15.2	45	20	115	Variable	41°	Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Kyocera	8154N109	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

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

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

				16	-0.089 to 0.0000	16	38	89	Coarse	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	87825A415	0000000


				Titanium Aluminum Nitride (TiAlN)-Coated Carbide







								4 Flutes

								16	-0.089 to 0.0000	16	38	89	Coarse	Equal	30°	Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Ultra Tool	87825A423	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

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

				16	0.0000 to 0.0760	19	33.3	143	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	Regal Cutting Tools	8855A74	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

				16	-0.0380 to 0.0000	19	41.3	143	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	Melin Tool	8891A45	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

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