2 9/16" Long Drill Bits | McMaster-Carr

Plug Chamfer—Plug-chamfer taps are a versatile choice for most tapping applications. With 3-5 chamfered cutting threads, they require moderate torque and are often used for start-to-finish tapping of through holes and closed-end holes. However, they do not start threads as easily as taper chamfers. When using them to tap closed-end holes, be sure to leave sufficient space at the bottom for chips to accumulate.

Black-Oxide High-Speed Steel Drill Bit—Black-oxide high-speed steel drill bits have a longer tool life than carbon steel. They cut with less friction than uncoated drill bits.

	Chamfer Type	Tap Sizes Included	Overall Lg.	Thread Type	No. of Flutes	Pitch Dia. Limit	Drill Bit Sizes Included	Drill Bit Material	Container Type	Includes		Each
Uncoated Carbon Steel Tap



	13	Plug	1 each of sizes: 4-40 6-32 8-32 10-24 10-32 1/4"-20	2" 2 1/8" 2 9/32" 2 9/16" 2 39/64"	UNC, UNF	3, 4	H3	43 ga. 35 ga. 29 ga. 25 ga. 21 ga. 7 ga.	Black-Oxide High-Speed Steel	Plastic Case	Tap Wrench	2609A12	000000

Quick-Change Hex Drill-Bit Countersinks for Wood and Plastic

Switch bits instead of tools to simplify jobs. These snap directly into drills, power screwdrivers, and other tools that accept a 1/4" hex shank. You can slide the countersink up and down the drill bit and then secure it with a set screw, so one tool will drill countersunk holes for screws of different lengths. These countersinks cut a smooth and even finish in wood and plastic on the first pass.

High-Speed Steel

2 Flutes

The choice if you're countersinking lots of holes, these wear-resistant countersinks cut faster and last longer than carbon steel.

Manufacturer—We source from trusted manufacturers who vet raw materials for purity and use diamond grinding wheels to machine precise edges. This keeps cutting surfaces smooth and free of microscopic burrs. Because our suppliers clean their wheels more often than other manufacturers, each countersink is consistently ground to create uniform holes every time.

	Countersinks									Replacement Drill Bits
							Uncoated
	Body Dia.	Max. Hole Drilling Dp.	For Screw Size	Overall Lg.	Shank Size	Shank Type	Mfr.		Each		Each
2 Flutes







				82° Countersink Angle

				1/2"	1"	No. 4	2 9/16"	1/4"	Quick-Change Hex	Make It Snappy Tools	2747A21	00000	8870A15	00000

Extra-Strong-Grip Fastener-Holding Nutdriver Bits

Quick-Change Hex

Shank

Image of Attribute. Front orientation. Contains Annotated.

External

Hex

Because they make contact on the flat sides of fasteners rather than only on the corners, these bits significantly reduce slipping and stripping. They are also known as lobular bits.

Quick-Change Hex Shank—Quick-change hex shank bits have a groove in the shank and fit directly into power tools without an adapter. They offer more reach for recessed holes and less wobble compared to a hex shank bit used with an adapter.

Magnet—Bits with magnet hold steel fasteners.

			Overall
	Drive Size	Bolt Clearance	Lg.	Dia.	Fastener-Holding Mechanism	Material		Each
1/4" Quick-Change Hex Shank



		7/16"	3/16"	2 9/16"	0.625"	Magnet	Steel	7291A77	00000

High-Speed Steel Ball End Mills


Ball Cut Style	4 Flutes

Use these end mills for general purpose milling in most material, such as aluminum, brass, bronze, iron, and steel. They have a ball end for milling rounded slots, slopes, and contours. 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.

4 Flutes—End mills with four flutes provide a finer finish and operate with less vibration when run at high speeds.

	Mill
	Dia.	Dia. Tolerance	Shank Dia.	Lg. of Cut	Overall Lg.	Flute Spacing	Helix Angle	For Use On	End Mill Type	Cut Style		Each
Uncoated High-Speed Steel







				4 Flutes

				1/4"	0.000" to 0.003"	3/8"	3/4"	2 9/16"	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Ball	2866A61	000000

Cobalt Steel Tapered Square End Mills

Tapered Cut Style

3 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 and steel. Also known as taper degree end mills, they're often used to machine angled slots in dies and molds.

Uncoated Cobalt Steel—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 Cobalt Steel—Use titanium nitride (TiN)-coated end mills for demanding, high-speed jobs in hard material as well as for longer production runs. They create less friction than uncoated end mills, which means they last longer when run at similar speeds.

3 Flutes—End mills with three flutes provide better chip clearance for high-volume, high-speed plunge, slotting, and roughing cuts.

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.

		Mill
	Taper Angle per Side	Dia.	Dia. Tolerance	Max. Taper Dia.	Shank Dia.	Lg. of Cut	Overall Lg.	Flute Spacing	For Use On	End Mill Type	Cut Style		Each
Uncoated Cobalt Steel







				3 Flutes

				5°	3/16"	-0.002" to 0.002"	5/16"	3/8"	3/4"	2 9/16"	Equal	Aluminum, Brass, Bronze, Copper, Fiberglass, Iron, Plastic, Steel	Center Cutting	Tapered	8147N517	000000


				7°	1/8"	-0.002" to 0.002"	5/16"	3/8"	3/4"	2 9/16"	Equal	Aluminum, Brass, Bronze, Copper, Fiberglass, Iron, Plastic, Steel	Noncenter Cutting	Tapered	8147N612	00000


				Titanium Nitride (TiN)-Coated Cobalt Steel







								3 Flutes

								5°	3/16"	-0.002" to 0.002"	5/16"	3/8"	3/4"	2 9/16"	Equal	Aluminum, Brass, Bronze, Copper, Fiberglass, Iron, Plastic, Steel	Center Cutting	Tapered	8296N517	00000


								7°	1/8"	-0.002" to 0.002"	5/16"	3/8"	3/4"	2 9/16"	Equal	Aluminum, Brass, Bronze, Copper, Fiberglass, Iron, Plastic, Steel	Noncenter Cutting	Tapered	8296N612	00000

High-Speed Steel Tapered Square End Mills


Tapered Cut Style	3 Flutes

Use these versatile end mills for milling in most material, including aluminum, brass, bronze, iron, and steel. Also known as taper degree end mills, they're often used to machine angled slots in dies and molds.

Uncoated High-Speed Steel—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 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 create less friction than uncoated end mills, which means they last longer when run at similar speeds.

3 Flutes—End mills with three flutes provide better chip clearance for high-volume, high-speed plunge, slotting, and roughing cuts.

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

		Mill
	Taper Angle per Side	Dia.	Dia. Tolerance	Max. Taper Dia.	Shank Dia.	Lg. of Cut	Overall Lg.	Flute Spacing	For Use On	End Mill Type	Cut Style		Each
Uncoated High-Speed Steel







				3 Flutes

				5°	3/16"	-0.002" to 0.002"	5/16"	3/8"	3/4"	2 9/16"	Equal	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Tapered	8936A36	000000


				7°	1/8"	-0.002" to 0.002"	5/16"	3/8"	3/4"	2 9/16"	Equal	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Tapered	8936A81	00000


				Titanium Nitride (TiN)-Coated High-Speed Steel







								3 Flutes

								5°	3/16"	-0.002" to 0.002"	5/16"	3/8"	3/4"	2 9/16"	Equal	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Tapered	8045N59	00000


								7°	1/8"	-0.002" to 0.002"	5/16"	3/8"	3/4"	2 9/16"	Equal	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Tapered	8045N68	00000