Dry Core Bits | McMaster-Carr

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261 Products

About Drill Bits

Compare material, finish, length class, and decimal size equivalents.

Carbide-Tipped Core Drill Bits for Masonry and Concrete

Remove a core of material with these hollow bits to make larger holes than fluted masonry bits. They're often used for installing pipe and conduit through brick and concrete. The carbide tip resists wear and heat to stay sharp.

SDS-Max Shank for Hammer and Rotary Drilling


	SDS-Max Shank

The slotted shank is compatible with SDS-Max-drive rotary hammers. These bits use simultaneous rotary and hammering action to penetrate material. Also known as percussion or impact bits.

Pilot Drills—Cut a groove before drilling to make starting the hole easier.

	Drill Bits								Pilot Drills
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Specs. Met	Includes		Each		Each
Uncoated







				Standard Point

				1 3/4"	1.75"	22"	17"	ANSI B212.15	Core Ejector Key, Pilot Drill	88865A22	0000000	88865A97	000000


				2"	2"	12"	7"	ANSI B212.15	Core Ejector Key, Pilot Drill	88865A63	000000	88865A97	00000
				2"	2"	22"	17"	ANSI B212.15	Core Ejector Key, Pilot Drill	88865A64	000000	88865A97	00000
				2 5/8"	2.625"	12"	7"	ANSI B212.15	Core Ejector Key, Pilot Drill	88865A23	000000	88865A97	00000
				2 5/8"	2.625"	22"	17"	ANSI B212.15	Core Ejector Key, Pilot Drill	88865A24	000000	88865A97	00000
				3 1/4"	3.25"	12"	7"	ANSI B212.15	Core Ejector Key, Pilot Drill	88865A25	000000	88865A97	00000
				3 1/4"	3.25"	22"	17"	ANSI B212.15	Core Ejector Key, Pilot Drill	88865A26	000000	88865A97	00000
				3 9/16"	3.5625"	12"	7"	ANSI B212.15	Core Ejector Key, Pilot Drill	88865A79	000000	88865A97	00000
				4"	4"	22"	17"	ANSI B212.15	Core Ejector Key, Pilot Drill	88865A76	000000	88865A97	00000
				5"	5"	22"	17"	ANSI B212.15	Core Ejector Key, Pilot Drill	88865A74	000000	88865A97	00000

Hex Shank for Rotary Only Drilling

The hex shape reduces the chance of the shank slipping in the chuck. Pair these bits with hand-held power drills and hammer drills set to rotary-only mode. Because they use rotary action only, they require more pressure to grind up material than other bits.

Pilot Drills—Cut a groove before drilling to make starting the hole easier.

	Drill Bits								Pilot Drills
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Shank Size	Specs. Met		Each		Each
Uncoated



		1"	1"	9"	7"	1/2"	ANSI B212.15	2942A23	0000000	2942A89	000000


		1"	1"	12"	10"	1/2"	ANSI B212.15	2942A42	000000	2942A89	00000
		1 1/4"	1.25"	12"	10"	1/2"	ANSI B212.15	2942A25	000000	2942A89	00000
		1 1/2"	1.5"	12"	10"	1/2"	ANSI B212.15	2942A27	000000	2942A89	00000
		1 3/4"	1.75"	12"	10"	1/2"	ANSI B212.15	2942A41	000000	2942A89	00000
		2"	2"	12"	10"	1/2"	ANSI B212.15	2942A43	000000	2942A89	00000
		2 1/2"	2.5"	12"	10"	1/2"	ANSI B212.15	2942A47	000000	2942A89	00000
		3"	3"	12"	10"	1/2"	ANSI B212.15	2942A48	000000	2942A69	00000

Extensions

		Each
18" Extension for 1/2" Hex Shank Size	2942A62	000000
18" Extension for 3/4" Hex Shank Size	2942A73	00000

Changeable-Size Carbide-Tipped Core Drill Bits for Masonry and Concrete

Instead of investing in multiple bits, change the bit body to drill a different-sized hole. These hollow bits remove a large core of material from concrete, brick, and masonry for installing pipe and conduit. The carbide tip resists wear and heat to stay sharp. Bits include a pilot drill to make starting holes easier.

SDS-Max Shank for Hammer and Rotary Drilling


	SDS-Max Shank

The slotted shank is compatible with SDS-Max-drive rotary hammers. These bits use simultaneous rotary and hammering action to penetrate material. Also known as percussion or impact bits.

	Max. Drilling Dp.	Specs. Met	Includes		Each
Uncoated







	Standard Point

	1 1/2"	1.5"	17"	12"	ANSI B212.15	Pilot Drill	3084A914	0000000


	1 3/4"	1.75"	17"	12"	ANSI B212.15	Pilot Drill	3084A915	000000
	2"	2"	17"	12"	ANSI B212.15	Pilot Drill	3084A916	000000
	2 1/2"	2.5"	17"	12"	ANSI B212.15	Pilot Drill	3084A917	000000
	3"	3"	17"	12"	ANSI B212.15	Pilot Drill	3084A918	000000
	3 1/2"	3.5"	17"	12"	ANSI B212.15	Pilot Drill	3084A919	000000
	4"	4"	17"	12"	ANSI B212.15	Pilot Drill	3084A921	000000
	4 1/2"	4.5"	17"	12"	ANSI B212.15	Pilot Drill	3084A922	000000
	5"	5"	17"	12"	ANSI B212.15	Pilot Drill	3084A923	000000

Accessories and Replacements for Drill Bits

Changeable Bit Bodies

	Decimal Size Equiv.	Overall Lg.	Component	Specs. Met		Each
Uncoated Carbide-Tipped Steel



	1 1/2"	1.5"	5"	Bit Body	ANSI B212.15	3084A43	0000000


	1 3/4"	1.75"	5"	Bit Body	ANSI B212.15	3084A44	000000
	2"	2"	5"	Bit Body	ANSI B212.15	3084A45	000000
	2 1/2"	2.5"	5"	Bit Body	ANSI B212.15	3084A46	000000
	3"	3"	5"	Bit Body	ANSI B212.15	3084A47	000000
	3 1/2"	3.5"	5"	Bit Body	ANSI B212.15	3084A48	000000
	4"	4"	5"	Bit Body	ANSI B212.15	3084A49	000000
	4 1/2"	4.5"	5"	Bit Body	ANSI B212.15	3084A56	000000
	5"	5"	5"	Bit Body	ANSI B212.15	3084A57	000000

Extensions, Replacement Shanks and Replacement Pilot Drills

		Each
6" Overall Length Extension	3084A59	000000
12" Overall Length Extension	3084A63	00000
18" Overall Length Extension	3084A64	000000
SDS-Max Shank	3084A121	00000
Pilot Drill for Changeable-Size Masonry Core Drill Bit	3084A58	00000

Spline Shank for Hammer and Rotary Drilling


	Spline Shank

The shank has 12 splines for use with a spline-drive rotary hammer, which rotate and hammers bits simultaneously to penetrate material. Also known as percussion or impact bits.

	Max. Drilling Dp.	Specs. Met	Includes		Each
Uncoated







	Standard Point

	1 1/2"	1.5"	17"	12"	ANSI B212.15	Pilot Drill	3084A814	0000000


	1 3/4"	1.75"	17"	12"	ANSI B212.15	Pilot Drill	3084A815	000000
	2"	2"	17"	12"	ANSI B212.15	Pilot Drill	3084A816	000000
	2 1/2"	2.5"	17"	12"	ANSI B212.15	Pilot Drill	3084A817	000000
	3"	3"	17"	12"	ANSI B212.15	Pilot Drill	3084A818	000000
	3 1/2"	3.5"	17"	12"	ANSI B212.15	Pilot Drill	3084A819	000000
	4 1/2"	4.5"	17"	12"	ANSI B212.15	Pilot Drill	3084A822	000000
	5"	5"	17"	12"	ANSI B212.15	Pilot Drill	3084A823	000000

Accessories and Replacements for Drill Bits

Changeable Bit Bodies

	Decimal Size Equiv.	Overall Lg.	Component	Specs. Met		Each
Uncoated Carbide-Tipped Steel



	1 1/2"	1.5"	5"	Bit Body	ANSI B212.15	3084A43	0000000


	1 3/4"	1.75"	5"	Bit Body	ANSI B212.15	3084A44	000000
	2"	2"	5"	Bit Body	ANSI B212.15	3084A45	000000
	2 1/2"	2.5"	5"	Bit Body	ANSI B212.15	3084A46	000000
	3"	3"	5"	Bit Body	ANSI B212.15	3084A47	000000
	3 1/2"	3.5"	5"	Bit Body	ANSI B212.15	3084A48	000000
	4 1/2"	4.5"	5"	Bit Body	ANSI B212.15	3084A56	000000
	5"	5"	5"	Bit Body	ANSI B212.15	3084A57	000000

Extensions, Replacement Shanks and Replacement Pilot Drills

		Each
6" Overall Length Extension	3084A59	000000
12" Overall Length Extension	3084A63	00000
18" Overall Length Extension	3084A64	000000
Spline Shank	3084A132	00000
Pilot Drill for Changeable-Size Masonry Core Drill Bit	3084A58	00000

Hollow-Core Cutters for Magnetic-Base Drills

Use these cutters with magnetic-base drills. Unlike drill bits, these cut only on the periphery of the hole and produce a solid slug. Also known as annular cutters.

High-Speed Steel—High-speed steel cutters have a bright finish and are for general purpose cutting.

Titanium Nitride (TiN)-Coated High-Speed Steel—Titanium nitride (TiN)-coated high-speed steel cutters last longer than uncoated high-speed steel.

Cobalt Steel—Cobalt steel cutters offer better heat and abrasion resistance than high-speed steel.

Carbide-Tipped Steel—Carbide-tipped steel cutters last longer than high-speed steel and cobalt steel cutters and are for high-volume cutting of difficult-to-machine materials. Note: These cutters are more sensitive to shock and vibration compared to other cutters and should not be used with Jancy magnetic-base drill model USA101.

Hollow-Core Cutter Pilot Pins—Pilot pins align the cutter and eject the slug. They're also known as ejector pins.

	Cutters				Hollow-Core Cutter Pilot Pins
	Dia.	For Pilot Pin Dia.		Each		Each
High-Speed Steel







				1" Cutting Depth

				7/16"	3/16"	31315A108	000000	3124A81	000000


				1/2"	3/16"	31315A141	00000	3124A81	00000
				9/16"	1/4"	31315A112	00000	31315A252	00000
				5/8"	1/4"	31315A113	00000	31315A252	00000
				11/16"	1/4"	31315A114	00000	31315A252	00000
				3/4"	1/4"	31315A115	00000	31315A252	00000
				13/16"	1/4"	31315A116	00000	31315A252	00000
				7/8"	1/4"	31315A117	00000	31315A252	00000
				15/16"	1/4"	31315A118	00000	31315A252	00000
				1"	1/4"	31315A119	00000	31315A252	00000
				1 1/16"	1/4"	31315A121	00000	31315A252	00000


				1 1/8"	1/4"	31315A122	00000	31315A252	00000
				1 3/16"	1/4"	31315A123	00000	31315A252	00000
				1 1/4"	1/4"	31315A124	00000	31315A252	00000
				1 5/16"	1/4"	31315A125	00000	31315A252	00000
				1 3/8"	1/4"	31315A126	000000	31315A252	00000
				1 1/2"	1/4"	31315A128	000000	31315A252	00000
				1 5/8"	1/4"	31315A131	000000	31315A252	00000
				1 3/4"	1/4"	31315A133	000000	31315A252	00000
				2"	1/4"	31315A137	000000	31315A252	00000
				12 mm	1/4"	6850A21	00000	3124A81	00000


				14 mm	1/4"	6850A23	00000	31315A252	00000
				16 mm	1/4"	6850A25	00000	———	0
				18 mm	1/4"	6850A27	00000	31315A252	00000
				20 mm	1/4"	6850A29	00000	31315A252	00000
				24 mm	1/4"	6850A34	00000	31315A252	00000
				26 mm	1/4"	6850A36	00000	31315A252	00000
				28 mm	1/4"	6850A38	00000	31315A252	00000
				30 mm	1/4"	6850A41	00000	31315A252	00000
				32 mm	1/4"	6850A43	00000	31315A252	00000




						2" Cutting Depth

						7/16"	3/16"	31315A109	00000	3124A82	00000


						1/2"	3/16"	31315A241	00000	3124A82	00000
						9/16"	1/4"	31315A212	00000	31315A253	00000
						5/8"	1/4"	31315A213	00000	31315A253	00000
						11/16"	1/4"	31315A214	00000	31315A253	00000
						3/4"	1/4"	31315A215	00000	31315A253	00000
						13/16"	1/4"	31315A216	00000	31315A253	00000
						7/8"	1/4"	31315A217	00000	31315A253	00000
						15/16"	1/4"	31315A218	00000	31315A253	00000
						1"	1/4"	31315A219	000000	31315A253	00000
						1 1/16"	1/4"	31315A221	000000	31315A253	00000


1 1/8"	1/4"					31315A222	000000	31315A253	00000
1 3/16"	1/4"					31315A223	000000	31315A253	00000
1 1/4"	1/4"					31315A224	000000	31315A253	00000
1 5/16"	1/4"	31315A225				000000	31315A253	00000
1 3/8"	1/4"	31315A226	000000			31315A253	00000
1 1/2"	1/4"	31315A228	000000			31315A253	00000
1 5/8"	1/4"	31315A231	000000			31315A253	00000
1 3/4"	1/4"	31315A233	000000			31315A253	00000
2"	1/4"	31315A237	000000			31315A253	00000
12 mm	1/4"	6850A22	00000			3124A82	00000


14 mm	1/4"	6850A24	00000			31315A253	00000
16 mm	1/4"	6850A26	00000			31315A253	00000
18 mm	1/4"	6850A28	00000			31315A253	00000
20 mm	1/4"	6850A31	00000			31315A253	00000
24 mm	1/4"	6850A35	000000			31315A253	00000
26 mm	1/4"	6850A37	000000			31315A253	00000
28 mm	1/4"	6850A39	000000			31315A253	00000
30 mm	1/4"	6850A42	000000			31315A253	00000
32 mm	1/4"	6850A44	000000			31315A253	00000


Titanium Nitride (TiN)-Coated High-Speed Steel







						1" Cutting Depth

						7/16"	3/16"	8847A71	00000	3124A81	00000


						1/2"	3/16"	8847A11	00000	3124A81	00000
						9/16"	1/4"	8847A12	00000	31315A252	00000
						5/8"	1/4"	8847A13	00000	31315A252	00000
						11/16"	1/4"	8847A14	00000	31315A252	00000
						3/4"	1/4"	8847A15	00000	———	0
						13/16"	1/4"	8847A16	00000	31315A252	00000
						7/8"	1/4"	8847A17	00000	31315A252	00000
						15/16"	1/4"	8847A18	00000	31315A252	00000
						1"	1/4"	8847A19	00000	31315A252	00000
						1 1/16"	1/4"	8847A21	00000	31315A252	00000


				1 1/8"	1/4"	8847A22	00000	31315A252	00000
				1 3/16"	1/4"	8847A23	000000	31315A252	00000
				1 1/4"	1/4"	8847A24	000000	31315A252	00000
				1 5/16"	1/4"	8847A25	000000	31315A252	00000
				1 3/8"	1/4"	8847A26	000000	31315A252	00000
				1 1/2"	1/4"	8847A28	000000	31315A252	00000
				1 5/8"	1/4"	8847A31	000000	31315A252	00000
				1 3/4"	1/4"	8847A33	000000	31315A252	00000
				2"	1/4"	8847A37	000000	31315A252	00000




						2" Cutting Depth

						7/16"	3/16"	8847A72	00000	3124A82	00000


						1/2"	3/16"	8847A41	00000	3124A82	00000
						9/16"	1/4"	8847A42	00000	31315A253	00000
						5/8"	1/4"	8847A43	00000	31315A253	00000
						11/16"	1/4"	8847A44	00000	31315A253	00000
						3/4"	1/4"	8847A45	00000	31315A253	00000
						13/16"	1/4"	8847A46	000000	31315A253	00000
						7/8"	1/4"	8847A47	000000	31315A253	00000
						15/16"	1/4"	8847A48	000000	31315A253	00000
						1"	1/4"	8847A49	000000	31315A253	00000
						1 1/16"	1/4"	8847A51	000000	31315A253	00000


						1 1/8"	1/4"	8847A52	000000	31315A253	00000
						1 3/16"	1/4"	8847A53	000000	31315A253	00000
						1 1/4"	1/4"	8847A54	000000	31315A253	00000
						1 5/16"	1/4"	8847A55	000000	31315A253	00000
						1 3/8"	1/4"	8847A56	000000	31315A253	00000
						1 1/2"	1/4"	8847A58	000000	31315A253	00000
						1 5/8"	1/4"	8847A61	000000	31315A253	00000
						1 3/4"	1/4"	8847A63	000000	31315A253	00000
						2"	1/4"	8847A67	000000	31315A253	00000


Cobalt Steel







						1" Cutting Depth

						7/16"	3/16"	3124A71	00000	3124A81	00000


						1/2"	3/16"	3124A11	00000	3124A81	00000
						9/16"	1/4"	3124A13	00000	31315A252	00000
						5/8"	1/4"	3124A14	00000	31315A252	00000
						11/16"	1/4"	3124A15	00000	31315A252	00000
						3/4"	1/4"	3124A16	00000	31315A252	00000
						13/16"	1/4"	3124A17	00000	31315A252	00000
						7/8"	1/4"	3124A18	00000	31315A252	00000
						15/16"	1/4"	3124A19	00000	31315A252	00000
						1"	1/4"	3124A21	00000	31315A252	00000
						1 1/16"	1/4"	3124A22	00000	31315A252	00000


						1 1/8"	1/4"	3124A23	000000	31315A252	00000
						1 3/16"	1/4"	3124A24	000000	31315A252	00000
						1 1/4"	1/4"	3124A25	000000	31315A252	00000
						1 5/16"	1/4"	3124A26	000000	31315A252	00000
						1 3/8"	1/4"	3124A27	000000	31315A252	00000
						1 1/2"	1/4"	3124A29	000000	31315A252	00000
						1 5/8"	1/4"	3124A32	000000	31315A252	00000
						1 3/4"	1/4"	3124A34	000000	31315A252	00000
						2"	1/4"	3124A38	000000	31315A252	00000




						2" Cutting Depth

						7/16"	3/16"	3124A73	00000	3124A82	00000


						1/2"	3/16"	3124A39	00000	3124A82	00000
						9/16"	1/4"	3124A43	00000	31315A253	00000
						5/8"	1/4"	3124A44	00000	31315A253	00000
						11/16"	1/4"	3124A45	00000	31315A253	00000
						3/4"	1/4"	3124A46	000000	31315A253	00000
						13/16"	1/4"	3124A47	000000	31315A253	00000
						7/8"	1/4"	3124A48	000000	31315A253	00000
						15/16"	1/4"	3124A49	000000	31315A253	00000
						1"	1/4"	3124A51	000000	31315A253	00000
						1 1/16"	1/4"	3124A52	000000	31315A253	00000


						1 1/8"	1/4"	3124A53	000000	31315A253	00000
						1 3/16"	1/4"	3124A54	000000	31315A253	00000
						1 1/4"	1/4"	3124A55	000000	31315A253	00000
						1 5/16"	1/4"	3124A56	000000	31315A253	00000
						1 3/8"	1/4"	3124A57	000000	31315A253	00000
						1 1/2"	1/4"	3124A59	000000	31315A253	00000
						1 5/8"	1/4"	3124A62	000000	31315A253	00000
						1 3/4"	1/4"	3124A64	000000	31315A253	00000
						2"	1/4"	3124A68	000000	31315A253	00000


Carbide-Tipped Steel







						2" Cutting Depth

						1/2"	1/4"	3124A911	00000	31315A253	00000


						9/16"	1/4"	3124A912	00000	31315A253	00000
						5/8"	1/4"	3124A913	00000	31315A253	00000
						11/16"	5/16"	3118A111	000000	3118A141	00000
						3/4"	5/16"	3118A112	000000	3118A141	00000
						13/16"	5/16"	3118A113	000000	3118A141	00000
						7/8"	5/16"	3118A114	000000	3118A141	00000
						15/16"	5/16"	3118A115	000000	3118A141	00000
						1"	5/16"	3118A116	000000	3118A141	00000
						1 1/16"	5/16"	3118A117	000000	3118A141	00000
						1 1/8"	5/16"	3118A118	000000	3118A141	00000


						1 3/16"	5/16"	3118A119	000000	3118A141	00000
						1 1/4"	5/16"	3118A121	000000	3118A141	00000
						1 5/16"	5/16"	3118A122	000000	3118A141	00000
						1 3/8"	5/16"	3118A123	000000	3118A141	00000
						1 7/16"	5/16"	3118A124	000000	3118A141	00000
						1 1/2"	5/16"	3118A125	000000	3118A141	00000
						1 9/16"	5/16"	3118A126	000000	3118A141	00000
						1 5/8"	5/16"	3118A127	000000	3118A141	00000
						1 3/4"	5/16"	3118A129	000000	3118A141	00000
						1 13/16"	5/16"	3118A131	000000	3118A141	00000


				1 15/16"	5/16"	3118A133	000000	3118A141	00000
				2"	5/16"	3118A134	000000	3118A141	00000

Hollow-Core Cutter Arbor Adapters

You can also pair the cutters with an arbor adapter (sold separately) when using a manual drill press or milling machine.

For Carbide-Tipped Cutters—Arbor adapters for carbide-tipped steel cutters come with a pilot pin.

Round Shank—Arbor adapters for a round shank fit a drill chuck or an R8 collet on a milling machine.

Morse Taper Shank—Arbor adapters for a Morse Taper spindle are for use on a drill press.

	Machine Taper No.	For Machine Spindle Type	For Machine Spindle Taper No.	Shank Dia.	Overall Lg.	For Shank Size		Each
For Cobalt Steel and High-Speed Steel



	Round	—	—	—	3/4"	5 1/8"	—	31315A254	0000000


	Morse Taper	Morse 2	—	—	—	6 1/4"	—	31315A255	000000
	Morse Taper	Morse 3	—	—	—	6 1/4"	—	31315A251	000000


	For Carbide-Tipped Steel



			—	—	Morse Taper	Morse 2	—	160 mm	3/4"	3118A142	000000


			—	—	Morse Taper	Morse 3	—	190 mm	3/4"	3118A143	000000

Stack-Drilling Hollow-Core Cutters for Magnetic-Base Drills

The geometry of these cutters allows you to cut aligned holes in multiple sheets at one time. Use them with magnetic-base drills. Unlike drill bits, these cut only on the periphery of the hole and produce a solid slug. They're also known as annular cutters.

Hollow-Core Cutter Pilot Pins—Pilot pins align the cutter and eject the slug. They're also known as ejector pins.

	Cutters			Hollow-Core Cutter Pilot Pins
	Dia.	For Pilot Pin Dia.	Each		Each
High-Speed Steel







			2" Cutting Depth

			1/2"	3/16"	5258A42	000000	3124A82	000000


			9/16"	1/4"	5258A43	00000	31315A253	00000
			5/8"	1/4"	5258A44	000000	31315A253	00000
			11/16"	1/4"	5258A45	000000	31315A253	00000
			3/4"	1/4"	5258A46	000000	31315A253	00000
			13/16"	1/4"	5258A47	000000	31315A253	00000
			7/8"	1/4"	5258A48	000000	31315A253	00000
			15/16"	1/4"	5258A49	000000	31315A253	00000
			1"	1/4"	5258A51	000000	31315A253	00000
			1 1/8"	1/4"	5258A52	000000	31315A253	00000
			1 3/16"	1/4"	5258A53	000000	31315A253	00000


			1 1/4"	1/4"	5258A54	000000	31315A253	00000
			1 5/16"	1/4"	5258A55	000000	31315A253	00000
			1 3/8"	1/4"	5258A56	000000	31315A253	00000
			1 7/16"	1/4"	5258A57	000000	31315A253	00000
			1 1/2"	1/4"	5258A58	000000	31315A253	00000

Hollow-Core Cutter Arbor Adapters

You can also pair the cutters with an arbor adapter (sold separately) when using a manual drill press or milling machine.

Round Shank—Arbor adapters for a round shank fit a drill chuck or an R8 collet on a milling machine.

Morse Taper Shank—Arbor adapters for a Morse Taper spindle are for use on a drill press.

	Machine Taper No.	Shank Dia.	Overall Lg.		Each
For Cobalt Steel and High-Speed Steel



	Round	—	3/4"	5 1/8"	31315A254	0000000


	Morse Taper	Morse 2	—	6 1/4"	31315A255	000000
	Morse Taper	Morse 3	—	6 1/4"	31315A251	000000

Hollow-Core Cutter Kits for Magnetic-Base Drills

Kits include five cutters, a pilot pin, and a hex key. Unlike drill bits, these cut only on the periphery of the hole and produce a solid slug. For use with magnetic-base drills. They're also known as annular cutters. Pilot pins align the cutter and eject the slug. They're also known as ejector pins.

		Each
High-Speed Steel



	1"	31315A311	0000000


	2"	31315A312	000000

Hollow-Core Cutter Arbor Adapters

You can also pair the cutters with an arbor adapter (sold separately) when using a manual drill press or milling machine.

Round Shank—Arbor adapters for a round shank fit a drill chuck or an R8 collet on a milling machine.

Morse Taper Shank—Arbor adapters for a Morse Taper spindle are for use on a drill press.

	Machine Taper No.	Shank Dia.	Overall Lg.		Each
For Cobalt Steel and High-Speed Steel



	Round	—	3/4"	5 1/8"	31315A254	0000000


	Morse Taper	Morse 2	—	6 1/4"	31315A255	000000
	Morse Taper	Morse 3	—	6 1/4"	31315A251	000000

Tap-Size Hollow-Core Cutters for Magnetic-Base Drills

These cutters are perfectly sized for cutting holes that will be tapped later. Use them with magnetic-base drills. Unlike drill bits, these cut only on the periphery of the hole and produce a solid slug. They're also known as annular cutters.

Hollow-Core Cutter Pilot Pins—Pilot pins align the cutter and eject the slug. They're also known as ejector pins.

	Cutters					Hollow-Core Cutter Pilot Pins
	Dia.	For Tap Thread Size	For Pilot Pin Dia.		Each		Each
High-Speed Steel







				2" Cutting Depth

				27/64"	1/2"-13	3/16"	6849A41	000000	3124A82	000000


				29/64"	1/2"-20	3/16"	6849A42	00000	3124A82	00000
				31/64"	9/16"-12	3/16"	6849A43	00000	3124A82	00000
				17/32"	5/8"-11	3/16"	6849A44	00000	3124A82	00000
				21/32"	3/4"-10	1/4"	6849A45	00000	31315A253	00000
				49/64"	7/8"-9	1/4"	6849A46	00000	31315A253	00000
				51/64"	7/8"-14	1/4"	6849A47	000000	31315A253	00000
				59/64"	1"-12	1/4"	6849A48	000000	31315A253	00000
				59/64"	1"-14	1/4"	6849A49	000000	31315A253	00000
				1 1/32"	1 1/8"-12	1/4"	6849A52	000000	31315A253	00000
				1 7/64"	1 1/4"-7	1/4"	6849A53	000000	31315A253	00000


				1 11/64"	1 1/4"-12	1/4"	6849A54	000000	31315A253	00000
				1 11/32"	1 1/2"-6	1/4"	6849A55	000000	31315A253	00000
				1 27/64"	1 1/2"-12	1/4"	6849A56	000000	31315A253	00000
				25 mm	1 1/8"-7	1/4"	6849A51	000000	31315A253	00000

Hollow-Core Cutter Arbor Adapters

You can also pair the cutters with an arbor adapter (sold separately) when using a manual drill press or milling machine.

Round Shank—Arbor adapters for a round shank fit a drill chuck or an R8 collet on a milling machine.

Morse Taper Shank—Arbor adapters for a Morse Taper spindle are for use on a drill press.

	Machine Taper No.	Shank Dia.	Overall Lg.		Each
For Cobalt Steel and High-Speed Steel



	Round	—	3/4"	5 1/8"	31315A254	0000000


	Morse Taper	Morse 2	—	6 1/4"	31315A255	000000
	Morse Taper	Morse 3	—	6 1/4"	31315A251	000000