3 Piece Drill Bit Set | McMaster-Carr

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9 Products

About Drill Bits

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

Step Drill High-Speed Steel Bit Sets

Standard

Drill multiple hole sizes using only one bit. These have steps with progressively larger diameters—the deeper they drill, the bigger the hole. Count the steps as you drill to achieve the proper size. These bits also deburr as they cut, so they're good for thin materials like sheet metal and plastic panels. Wear and heat resistant, high-speed steel is versatile for use on a range of materials.

Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated and oxide-coated bits, especially on tough materials like hardened steel and nickel.

Uncoated—The most economical option, uncoated bits perform best when used on low-carbon steel and aluminum. Polished to reduce friction, they're also known as bright finish bits.

	Drill Bit Sizes Included	System of Measurement	Drill Bit Point Style	Container Type		Each
Titanium Nitride (TiN) Coated



	3	1 each in sizes 1/8"-1/2", 3/16"-1/2", 1/4"-3/4"	Inch	Standard Point	Plastic Pouch	89315A48	0000000


	Uncoated



			3	1 each in sizes 1/8"-1/2", 3/16"-1/2", 1/4"-3/4"	Inch	Standard Point	—	8841A32	00000

Quick-Change Hex Carbide-Tipped Drill Bit Sets for Masonry and Concrete

Add masonry drilling to the jobs your impact driver can do. These bits snap into a _1/4" hex shank so you don't have to change tools when switching from drilling to driving. They have a carbide tip that resists wear and heat to stay sharp.

Quick-Change Hex Shank for Rotary Only Drilling

Because these bits use rotary instead of hammering action, they require more pressure to grind up material.

	Drill Bit Size	Drill Bit Point Type		Each
Uncoated



	3	5/32", 3/16", 1/4"	Standard	2628N14	000000

Impact Square Drive Adapter Sets for Power Tools

Attach your impact square-drive sockets to power drills, impact drivers, and other tools that accept a hex shank. The adapters in these sets are made to withstand the high torque and force of impact tools.

No. of Pieces	Includes	Overall Lg.	Material	Color	Socket Retainer Style		Each
3	1/4" Hex Shank × 1/4" Square Drive Adapter 1/4" Hex Shank × 3/8" Square Drive Adapter 1/4" Hex Shank × 1/2" Square Drive Adapter	2"	Oil-Coated Steel	Black	Ball Detent	6417A11	000000

Drill/Mill End Mill Sets


Drill/Mill Cut Style

These multifunction tools have a 90° pointed tip that allows them to be used for drilling as well as for slotting, profiling, and chamfering cuts. Made of solid carbide, they're harder, stronger, and more wear resistant than high-speed 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. All are center cutting, allowing plunge cuts into a surface.

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







	2 Flutes

	3	1/2" Mill Dia. × 1/2" Shank Dia. × 3" O'all Lg. End Mill 1/4" Mill Dia. × 1/4" Shank Dia. × 2 1/2" O'all Lg. End Mill 3/8" Mill Dia. × 3/8" Shank Dia. × 2 1/2" O'all Lg. End Mill	Equal	30°	90°	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Drill/Mill	2770A81	0000000




			4 Flutes

			3	6 mm Mill Dia. × 6 mm Shank Dia. × 50 mm O'all Lg. End Mill 10 mm Mill Dia. × 10 mm Shank Dia. × 70 mm O'all Lg. End Mill 12 mm Mill Dia. × 12 mm Shank Dia. × 74 mm O'all Lg. End Mill	Equal	30°	90°	Aluminum, Brass, Bronze, Fiberglass, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Drill/Mill	2770A91	000000

Square Drive Adapter Sets for Power Tools

Attach your square-drive sockets to drills, powered screwdrivers, and other tools that accept a hex shank. Each adapter in these sets is color coded for easy identification. Not for use with impact tools.

No. of Pieces	Includes	Overall Lg.	Shank Type	Material	Socket Retainer Style	Container Type		Each
3	1/4" Hex Shank × 1/4" Square Drive Adapter (Red) 1/4" Hex Shank × 3/8" Square Drive Adapter (Blue) 1/4" Hex Shank × 1/2" Square Drive Adapter (Orange)	3"	Quick-Change Hex	Black-Oxide Steel	Ball Detent	Plastic Caddy	8504N11	000000

Flex Socket Adapter Sets

Convert your socket into a flex socket to access fasteners from an angle. Also known as universal joints.

No. of Pieces	Includes	Max. Access Angle	Material	Container Type		Each
3	1/4" Square Drive Flex Adapter (1 5/8" O'All Lg.) 3/8" Square Drive Flex Adapter (2 3/16" O'All Lg.) 1/2" Square Drive Flex Adapter (2 13/16" O'All Lg.)	55°	Chrome-Plated Steel	Plastic Clip Rail	8524N11	000000

Impact Flex Socket Adapter Sets

Convert your impact socket into a flex socket to access fasteners from an angle. Also known as universal joints. The adapters in these sets are sturdy, so they’ll withstand the high torque and force of impact tools.

No. of Pieces	Includes	Max. Access Angle	Material		Each
3	1/4" Square Drive Flex Adapter (1 5/8" O'All Lg.) 3/8" Square Drive Flex Adapter (2 3/16" O'All Lg.) 1/2" Square Drive Flex Adapter (2 13/16" O'All Lg.)	30°	Black-Oxide Steel	8546N11	000000