3-Flute Router Bits | McMaster-Carr

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Cutting Diameter

Number of Flutes

For Use On

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Cut Style

Length of Cut

Pilot Location

Overall Length

Flute Type

Material

Chip Removal Direction

Down

Finish

Aluminum Titanium Nitride (AlTiN) Coated

Shank Type

Cut Angle

Length

Router Bit Pilot Type

Ball Bearing

Solid

Ball Bearing Pilot Diameter

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50 Products

Trimming Router Bits

Cut layers of material flush to one another or make cuts along a template.

Uncoated Carbide-Tipped High-Speed Steel


Flush-Trimming Cut Style (Bottom Pilot)	Flush-Trimming Cut Style (Top Pilot)—Plunge-Cut

Bottom Pilot

Top Pilot

Carbide-tipped high-speed steel bits are for use on wood and laminate.

Bottom Pilot—Bottom-pilot bits trim material from an upper layer of the workpiece so that it is flush with the layer below. In addition to flush trimming, they can be used to cut along a template placed below the workpiece.

Top Pilot—Top-pilot bits cut a lower layer of the workpiece flush to the layer above. In addition to flush trimming, they can be used for pattern cutting with a template placed above the workpiece.

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

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

Ball Bearing—Ball-bearing pilots guide the bit for accurate cuts and produce less friction than solid pilots for smoother operation.

Pilot Location—Pilot location describes the position of the pilot when the bit is used for hand routing. The pilot location is reversed when using the bit with a router table.

	Overall Lg.	Router Bit Pilot Type	Ball Bearing Pilot Dia.	No. of Flutes	For Tool Type	For Use On	Mfr.		Each
Flush-Trimming Cut Style (Bottom Pilot)







	Straight Flutes

	1/2"	1/2"	1/4"	2"	Ball Bearing	1/2"	3	Hand Router, Router Table	Wood, Particleboard, Plywood, Laminate	Amana Tool	3116N24	000000


	1/2"	1"	1/4"	2 3/4"	Ball Bearing	1/2"	3	Hand Router, Router Table	Wood, Particleboard, Plywood, Laminate	Onsrud	35505A65	00000
	1/2"	1 1/2"	1/2"	3 7/8"	Ball Bearing	1/2"	3	Hand Router, Router Table	Wood, Particleboard, Plywood, Laminate	Amana Tool	3116N25	00000
	1/2"	2"	1/2"	4 5/8"	Ball Bearing	1/2"	3	Hand Router, Router Table	Wood, Particleboard, Plywood, Laminate	Amana Tool	3116N26	00000


	Flush-Trimming Cut Style (Top Pilot)—Plunge-Cut







					Straight Flutes

					3/8"	1/2"	1/4"	2"	Ball Bearing	3/8"	3	Hand Router, Router Table	Wood, Particleboard, Plywood, Laminate	Amana Tool	3116N112	00000


					1/2"	1/2"	1/4"	2 1/2"	Ball Bearing	1/2"	3	Hand Router, Router Table	Wood, Particleboard, Plywood, Laminate	Amana Tool	3116N115	00000
					1/2"	1"	1/4"	2 1/2"	Ball Bearing	1/2"	3	Hand Router, Router Table	Wood, Particleboard, Plywood, Laminate	Amana Tool	3116N122	00000
					3/4"	1 1/4"	1/2"	3 11/32"	Ball Bearing	3/4"	3	Hand Router, Router Table	Wood, Particleboard, Plywood, Laminate	Amana Tool	3116N134	00000

Uncoated Micrograin Carbide


Flush-Trimming Cut Style (Bottom Pilot)	Bottom Pilot

Micrograin carbide bits provide superior wear resistance, long tool life, and a cleaner finish than bits made of other materials.

Use carbide bits for longer tool life and faster cutting speeds than high-speed steel.

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

Ball Bearing—Ball-bearing pilots guide the bit for accurate cuts and produce less friction than solid pilots for smoother operation.

Pilot Location—Pilot location describes the position of the pilot when the bit is used for hand routing. The pilot location is reversed when using the bit with a router table.

	Overall Lg.	Router Bit Pilot Type	Ball Bearing Pilot Dia.	No. of Flutes	For Tool Type	For Use On	Mfr.		Each
Flush-Trimming Cut Style (Bottom Pilot)







	Straight Flutes

	5/8"	3/8"	1/4"	2"	Ball Bearing	5/8"	3	Hand Router, Router Table, CNC Machine	Wood, Particleboard, Plywood, Laminate	Bosch	3116N202	000000

Drill/Mill Router Bits

Drill, mill, and trim with the same bit. The unique shape on these bits was originally used for aircraft panels. They have a pointed end and spiral flutes, like a drill bit, making downward plunge cuts easier than with square-cut and straight-flute bits. The spiral flutes also leave a smoother finish. The flutes lift chips up from the workpiece for applications that require a clean finish on the bottom edge of the cut. Securely clamp your material before routing to prevent lifting.

These bits are made of high-speed steel for general purpose use. They can be used with hand tools, router tables, and CNC machines. These bits do not have a pilot, so guide your router along a straight edge when hand routing to make accurate cuts.

Uncoated High-Speed Steel

Drill/Mill Cut

Style—Plunge-Cut

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







	Spiral Flutes with Upward Chip Removal

	3/32"	13/16"	3/32"	2"	3	Hand Router, Router Table, CNC Machine	Cast Iron, Copper, Steel, Stainless Steel, Titanium	Dormer Pramet	6518N104	000000


	1/8"	7/8"	1/8"	2 1/4"	3	Hand Router, Router Table, CNC Machine	Cast Iron, Copper, Steel, Stainless Steel, Titanium	Dormer Pramet	6518N101	00000
	5/32"	1 1/16"	3/16"	2 1/2"	3	Hand Router, Router Table, CNC Machine	Cast Iron, Copper, Steel, Stainless Steel, Titanium	Dormer Pramet	6518N102	00000

Straight and Spiral Router Bits for Wood, Particle Board, and Plywood

Square Cut Style

Create square slots, pockets, and edges in wood. These router bits are plunge cutting, letting you cut directly into the workpiece from above. They do not have a pilot, so guide your router along a straight edge when hand routing to make accurate cuts.

Uncoated Carbide

Square Cut

Style—Plunge-Cut,

Spiral Flute

Spiral Flute—Bits with spiral flutes leave a smoother finish than straight-flute bits and make plunge cuts more easily. They're made of solid carbide for longer tool life and faster cutting speeds than high-speed steel.

Downward Chip Removal—Spiral-flute bits with downward chip removal push chips down for applications that require a smooth finish on the cut's top edge.

Upward Chip Removal—Spiral-flute bits with upward chip removal lift chips up for applications that require a smooth finish on the bottom edge of the cut. Securely clamp the workpiece before routing to prevent lifting.

	Overall Lg.	No. of Flutes	For Tool Type	For Use On	Mfr.		Each
Square Cut Style—Plunge-Cut







	Spiral Flutes with Upward Chip Removal

	1/4"	3/4"	1/4"	2 1/2"	3	Hand Router, Router Table, CNC Machine	Wood, Particleboard, Plywood	Amana Tool	27395A201	000000


	3/8"	1 1/4"	3/8"	3"	3	Hand Router, Router Table, CNC Machine	Wood, Particleboard, Plywood	Amana Tool	27395A202	00000
	1/2"	1 1/2"	1/2"	3 1/2"	3	Hand Router, Router Table, CNC Machine	Wood, Particleboard, Plywood	Amana Tool	27395A203	000000
	1/2"	2"	1/2"	4"	3	Hand Router, Router Table, CNC Machine	Wood, Particleboard, Plywood	Amana Tool	27395A204	000000




			Spiral Flutes with Downward Chip Removal

			3/8"	1 1/4"	3/8"	3"	3	Hand Router, Router Table, CNC Machine	Wood, Particleboard, Plywood	Amana Tool	27395A205	00000


			1/2"	1 1/2"	1/2"	3 1/2"	3	Hand Router, Router Table, CNC Machine	Wood, Particleboard, Plywood	Amana Tool	27395A206	000000
			1/2"	2"	1/2"	4"	3	Hand Router, Router Table, CNC Machine	Wood, Particleboard, Plywood	Amana Tool	27395A207	000000

Ceramic-Coated Carbide

Square Cut

Style—Plunge-Cut,

Spiral Flute

Ceramic-coated carbide bits are harder and protected from high heat, making them last about 2.5 times longer than uncoated bits.

Downward Chip Removal—Spiral-flute bits with downward chip removal push chips down for applications that require a smooth finish on the cut's top edge.

	Overall Lg.	No. of Flutes	For Tool Type	For Use On	Mfr.		Each
Square Cut Style—Plunge-Cut







	Spiral Flutes with Upward Chip Removal

	1/8"	1/2"	1/4"	2"	3	Hand Router, Router Table, CNC Machine	Wood, Particleboard, Plywood	Amana Tool	27395A208	000000


	1/4"	3/4"	1/4"	2 1/2"	3	Hand Router, Router Table, CNC Machine	Wood, Particleboard, Plywood	Amana Tool	27395A209	00000
	1/2"	1 1/2"	1/2"	3 1/2"	3	Hand Router, Router Table, CNC Machine	Wood, Particleboard, Plywood	Amana Tool	27395A211	000000




			Spiral Flutes with Downward Chip Removal

			1/8"	1/2"	1/4"	2"	3	Hand Router, Router Table, CNC Machine	Wood, Particleboard, Plywood	Amana Tool	27395A212	00000


			1/4"	3/4"	1/4"	2 1/2"	3	Hand Router, Router Table, CNC Machine	Wood, Particleboard, Plywood	Amana Tool	27395A213	00000
			1/2"	1 1/2"	1/2"	3 1/2"	3	Hand Router, Router Table, CNC Machine	Wood, Particleboard, Plywood	Amana Tool	27395A214	000000

Straight and Spiral Router Bits for Plastic

The smooth flutes and sharp cutting edges on these router bits cleanly cut square slots, pockets, and edges in most plastics, including polyethylene, polycarbonate, and vinyl. They do not have a pilot, so guide your router along a straight edge when hand routing to make accurate cuts.

Uncoated Carbide


Square Cut Style	Square Cut Style Spiral Flute

Use carbide bits for longer tool life and faster cutting speeds than high-speed steel.

Spiral Flute—Bits with spiral flutes leave a smoother finish than straight-flute bits.

Downward Chip Removal—Bits with downward chip removal push chips down for applications that require a smooth finish on the cut's top edge.

Upward Chip Removal—Bits with upward chip removal lift chips up for applications that require a smooth finish on the bottom edge of the cut. Securely clamp the workpiece before routing to prevent lifting.

	Overall Lg.	No. of Flutes	For Tool Type	For Use On	Mfr.		Each
Square Cut Style







	Spiral Flutes with Upward Chip Removal

	1/4"	3/8"	1/4"	3"	3	Hand Router, Router Table, CNC Machine	Hard Plastic, Soft Plastic	Amana Tool	6361N21	000000


	1/4"	7/8"	1/4"	3"	3	Hand Router, Router Table, CNC Machine	Hard Plastic, Soft Plastic	Amana Tool	6361N23	00000
	3/8"	5/8"	3/8"	3"	3	Hand Router, Router Table, CNC Machine	Hard Plastic, Soft Plastic	Amana Tool	6361N27	00000
	1/2"	1 1/8"	1/2"	3 1/2"	3	Hand Router, Router Table, CNC Machine	Hard Plastic, Soft Plastic	Amana Tool	6361N31	000000




			Spiral Flutes with Downward Chip Removal

			1/4"	3/8"	1/4"	3"	3	Hand Router, Router Table, CNC Machine	Hard Plastic, Soft Plastic	Amana Tool	6361N46	00000


			1/4"	7/8"	1/4"	3"	3	Hand Router, Router Table, CNC Machine	Hard Plastic, Soft Plastic	Amana Tool	6361N47	00000
			3/8"	5/8"	3/8"	3"	3	Hand Router, Router Table, CNC Machine	Hard Plastic, Soft Plastic	Amana Tool	6361N48	00000
			1/2"	1 1/8"	1/2"	3 1/2"	3	Hand Router, Router Table, CNC Machine	Hard Plastic, Soft Plastic	Amana Tool	6361N49	000000

Ceramic-Coated Carbide

Ceramic-coated carbide bits have a coating that increases the hardness of the bits and protects them from high heat, making them last about 2.5 times longer than uncoated bits. Use carbide bits for longer tool life and faster cutting speeds than high-speed steel.

Spiral Flute—Bits with spiral flutes leave a smoother finish than straight-flute bits.

Downward Chip Removal—Bits with downward chip removal push chips down for applications that require a smooth finish on the cut's top edge.

	Overall Lg.	No. of Flutes	For Tool Type	For Use On	Mfr.		Each
Square Cut Style







	Spiral Flutes with Upward Chip Removal

	1/4"	7/8"	1/4"	3"	3	Hand Router, Router Table, CNC Machine	Hard Plastic, Soft Plastic	Amana Tool	6537N15	000000


	3/8"	1 1/8"	3/8"	3"	3	Hand Router, Router Table, CNC Machine	Hard Plastic, Soft Plastic	Amana Tool	6537N17	000000
	1/2"	1 1/8"	1/2"	3 1/2"	3	Hand Router, Router Table, CNC Machine	Hard Plastic, Soft Plastic	Amana Tool	6537N18	000000
	1/2"	1 5/8"	1/2"	4"	3	Hand Router, Router Table, CNC Machine	Hard Plastic, Soft Plastic	Amana Tool	6537N19	000000




			Spiral Flutes with Downward Chip Removal

			1/4"	7/8"	1/4"	3"	3	Hand Router, Router Table, CNC Machine	Hard Plastic, Soft Plastic	Amana Tool	6537N23	00000


			3/8"	1 1/8"	3/8"	3"	3	Hand Router, Router Table, CNC Machine	Hard Plastic, Soft Plastic	Amana Tool	6537N25	000000
			1/2"	1 1/8"	1/2"	3 1/2"	3	Hand Router, Router Table, CNC Machine	Hard Plastic, Soft Plastic	Amana Tool	6537N26	000000
			1/2"	1 5/8"	1/2"	4"	3	Hand Router, Router Table, CNC Machine	Hard Plastic, Soft Plastic	Amana Tool	6537N27	000000

Router Bits for Wood Joining

Create shapes that fit together to form wood joints commonly used to build doors and frames.

Slotting Wood Joint—Uncoated Carbide-Tipped High-Speed Steel

Slotting bits have a ball-bearing pilot that guides the bit for accurate cuts and produces less friction than solid pilots for smoother operation.

	Overall Lg.	Router Bit Pilot Type	Ball Bearing Pilot Dia.	No. of Flutes	For Tool Type	For Use On	Mfr.		Each
Joining Cut Style







	Straight Flutes

	1/16"	1 7/8"	1/4"	2 3/8"	Ball Bearing	7/8"	3	Hand Router, Router Table	Wood, Particleboard, Plywood	Amana Tool	3447N13	000000


	1/8"	1 7/8"	1/4"	2 3/8"	Ball Bearing	7/8"	3	Hand Router, Router Table	Wood, Particleboard, Plywood	Amana Tool	3447N11	00000
	1/4"	1 7/8"	1/4"	2 3/8"	Ball Bearing	7/8"	3	Hand Router, Router Table	Wood, Particleboard, Plywood	Amana Tool	3447N12	00000

Tongue-and-Groove Wood Joint—Uncoated Carbide-Tipped Steel

Tongue and groove bits have a solid pilot that guides the bit while routing. Solid pilots are more durable than ball bearing bits. All other bits do not have a pilot, so guide your router along a straight edge when hand routing to make accurate cuts. To cut the tongue, use the fully assembled bit. To cut the groove, remove one of the two cutters and adjust the height of the bit.

	Overall Lg.	Router Bit Pilot Type	No. of Flutes	For Tool Type	For Use On	Mfr.		Each
Joining Cut Style







	Straight Flutes

	1 7/8"	3/4"	1/2"	3 1/16"	Solid	3	Hand Router, Router Table	Wood, Particleboard, Plywood	Bosch	6471N22	000000

Flush-Trimming and Chamfering Router Bits

Create straight and chamfering cuts on countertops or other laminate material without changing bits. For flush trimming, hold the bit at a height where only the straight cutting edge contacts the workpiece. For chamfering cuts, use the angled cutting edge. A ball-bearing pilot guides the bit for accurate cuts and produces low friction for smooth operation. The straight flutes quickly remove material and leave a rough finish. These bits cannot make plunge cuts, so they're best for operations where the peripheral teeth do most of the work such as trimming, contouring, and finishing.

Uncoated Micrograin Carbide


Chamfering Cut Style	Flush-Trimming Cut Style

Micrograin carbide bits provide superior wear resistance, long tool life, and a cleaner finish than bits made of other materials.

	Shank Dia.	Overall Lg.	Router Bit Pilot Type	Ball Bearing Pilot Dia.	No. of Flutes	For Tool Type	For Use On	Mfr.		Each
Chamfering Cut Style and Flush-Trimming Cut Style







	Straight Flutes

	3/4"	3/8"	9°	1/4"	2"	Ball Bearing	5/8"	3	Hand Router, Router Table, CNC Machine	Laminate	Bosch	6589N12	000000


	7/8"	3/8"	22°	1/4"	2"	Ball Bearing	5/8"	3	Hand Router, Router Table, CNC Machine	Laminate	Bosch	6589N11	00000

Spiral Router Bits for Steel and Stainless Steel

The aluminum-titanium-nitride (AlTiN) coating on these bits resists heat and wear when cutting steel and stainless steel. They have a square cut style for creating slots, pockets, and edges. They're made of solid carbide for longer tool life and faster cutting speeds than high-speed steel. Their extreme hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent the bit from breaking. With spiral flutes, they leave a smoother finish than straight-flute bits and are good for making plunge cuts. The flutes lift chips up from the workpiece for applications that require a smooth finish on the bottom edge of the cut. Securely clamp your material before routing to prevent lifting. Bits with more flutes produce a smoother finish.

Aluminum Titanium Nitride (AlTiN)-Coated Carbide


	Square Cut Style Spiral Flute 3 Flutes

	Overall Lg.	No. of Flutes	For Tool Type	For Use On	Mfr.		Each
Square Cut Style







	Spiral Flutes with Upward Chip Removal

	1/8"	3/8"	1/4"	1 1/2"	3	CNC Machine	Steel, Stainless Steel	Amana Tool	3324A204	000000


	3/16"	7/16"	1/4"	1 7/8"	3	CNC Machine	Steel, Stainless Steel	Amana Tool	3324A206	00000
	1/4"	5/8"	1/4"	2 3/8"	3	CNC Machine	Steel, Stainless Steel	Amana Tool	3324A207	00000