5 5/8" Long Drill Bits | McMaster-Carr

Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.

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.

Titanium Aluminum Nitride (TiAlN) Coated—The hardest and most wear-resistant coating, especially at high temperatures. These bits are best for hard and abrasive materials, such as iron and titanium.

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.

					Shank			Each		Package
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type		Each	Pkg. Qty.		Pkg.
Jobbers' Length







				Black Oxide

				29/64"	0.4531"	5 5/8"	3.5"	Round	29/64"	Split	2901A138	000000	6	2901A589	000000




						Titanium Nitride (TiN) Coated

						29/64"	0.4531"	5 5/8"	3.5"	Round	29/64"	Split	29115A738	00000	6	29115A838	000000




								Titanium Aluminum Nitride (TiAlN) Coated

								29/64"	0.4531"	5 5/8"	3.5"	Round	29/64"	Split	3202A72	00000	—	———	0




										Uncoated

										29/64"	0.4531"	5 5/8"	3.5"	Round	29/64"	Standard	8870A42	00000	6	8870A142	00000


										Short Length







														Uncoated

														57/64"	0.8906"	5 5/8"	2.28"	Round	57/64"	Standard	8947A258	00000	—	———	0

Cobalt Steel Drill Bits


Jobbers' Length Round Shank	Jobbers' Length Hex Shank	Split

Tough and wear resistant, cobalt steel bits last at least twice as long as high-speed steel. They can also run up to 25% faster at higher temperatures without being damaged on hard materials, such as nickel.

Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.

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—Polished to eject chips, these are also known as bright finish bits.

					Shank
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type		Each
Jobbers' Length







				Titanium Nitride (TiN) Coated

				29/64"	0.4531"	5 5/8"	4.19"	Round	29/64"	Split	27995A538	000000




						Titanium Aluminum Nitride (TiAlN) Coated

						27/64"	0.4219"	5 5/8"	3.07"	Round	27/64"	Split	2753A148	00000


						7/16"	0.4375"	5 5/8"	3.05"	Round	7/16"	Split	2753A149	00000
						29/64"	0.4531"	5 5/8"	3.02"	Round	29/64"	Split	2753A151	000000




								Uncoated

								29/64"	0.4531"	5 5/8"	2.95"	Hex	29/64"	Split	4909N29	00000


								29/64"	0.4531"	5 5/8"	3.5"	Round	29/64"	Split	3069A39	00000

Carbide-Tipped Drill Bits

Jobbers' Length

Round Shank


Standard	Split

Performance similar to solid carbide but at a lower price point. Like carbide bits, these are stronger than cobalt and high-speed steel and maintain their sharp edges when drilling abrasive material. However, when drilling tough metals like iron and hardened steel, upgrade to carbide for longer life.

Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.

					Shank
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type		Each
Jobbers' Length







				Uncoated

				29/64"	0.4531"	5 5/8"	3.6"	Round	29/64"	Standard	2940A36	000000


				29/64"	0.4531"	5 5/8"	3.6"	Round	29/64"	Split	31575A37	00000

Reduced-Shank High-Speed Steel Drill Bits

Jobbers' Length

Split

Cut large holes with drill presses and portable drills that have a standard-size chuck. The shank on these bits has a smaller diameter than the cutting tip. High-speed steel is good for general purpose drilling in most metals. Also known as Silver and Deming bits.

Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.

Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.

					Shank
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type		Each
Jobbers' Length







				Black Oxide

				29/64"	0.4531"	5 5/8"	4.19"	Reduced Round	3/8"	Split	8773A55	000000

Chip-Clearing High-Speed Steel Drill Bits


Jobbers' Length High Helix Flute Round Shank	Jobbers' Length Parabolic Flute Round Shank

Standard

Split

With flutes that lift chips out of the hole, you don't have to stop drilling to clear these bits manually. They improve coolant flow to dissipate heat and prevent clogs that can damage the bit and ruin the hole. High-speed steel is good for general purpose drilling in most metals.

High Helix Flute—Less aggressive than parabolic flutes for cleaner cuts in soft metals.

Parabolic Flute—A U-shaped groove on the flutes cuts faster and clears chips more quickly than high-helix bits, so these are better for drilling deeper holes.

Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.

Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.

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.

						Shank
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Flute Type	Type	Size	Drill Bit Point Type		Each
Jobbers' Length







				Black Oxide

				27/64"	0.4219"	5 5/8"	2.84"	High Helix	Round	27/64"	Split	31115A66	000000


				7/16"	0.4375"	5 5/8"	2.81"	High Helix	Round	7/16"	Split	31115A67	00000
				29/64"	0.4531"	5 5/8"	2.78"	High Helix	Round	29/64"	Split	31115A68	00000
				29/64"	0.4531"	5 5/8"	3.28"	Parabolic	Round	29/64"	Split	29925A38	00000




						Titanium Nitride (TiN) Coated

						29/64"	0.4531"	5 5/8"	3.28"	Parabolic	Round	29/64"	Split	29925A78	00000




								Uncoated

								29/64"	0.4531"	5 5/8"	3.28"	Parabolic	Round	29/64"	Split	2754A68	00000


								29/64"	0.4531"	5 5/8"	3.5"	High Helix	Round	29/64"	Standard	2912A138	00000

High-Speed Steel Precise-Cut Drill Bits for Wood

Wear and heat resistant, these stay sharp longer than precise-cut bits made of plain steel. The sharp center point keeps the bit from wandering during drilling to cut accurate straight and overlapping holes, even across the grain. Also known as brad-point bits.

	Max. Drilling Dp.	Shank Size	Drill Bit Point Type		Each
Uncoated







	Round Shank

	29/64"	0.4531"	5 5/8"	4.19"	7/16"	Brad	2926A124	000000

High-Speed Steel Drill Bits for Plastic

The precision-ground, 60° point penetrates gradually to prevent cracking and chipping. It also reduces heat that can deform the material. Use these bits for drilling into acrylic, laminate, and other plastics. They're made of wear-resistant high-speed steel.

Jobbers' Length About Jobbers' Length

					Shank
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Angle	Drill Bit Point Type		Each
Uncoated



		29/64"	0.4531"	5 5/8"	4.19"	Round	29/64"	60°	Standard	27465A66	000000

Steel Precise-Cut Drill Bits for Wood

Black-Oxide Steel

The sharp center point keeps these bits from wandering during drilling to cut accurate straight and overlapping holes, even across the grain. Also known as brad-point bits.

Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.

	Max. Drilling Dp.	Shank Size	Drill Bit Point Type		Each
Black Oxide







	Round Shank

	7/16"	0.4375"	5 5/8"	3.69"	3/8"	Brad	2926A47	00000

Chip-Clearing Cobalt Steel Drill Bits for Nickel and Stainless Steel

Jobbers' Length

Parabolic Flute

Round Shank

Split

Excellent for challenging metals such as stainless steel and nickel alloys, these bits cut aggressively and evacuate chips quickly. The grooved flutes prevent clogs and improve coolant flow to dissipate heat that can damage the bit or your material. Bits are made of tough and wear-resistant cobalt steel.

Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.

						Shank
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Flute Type	Type	Size	Drill Bit Point Type		Each
Jobbers' Length







				Titanium Aluminum Nitride (TiAlN) Coated

				7/16"	0.4375"	5 5/8"	3.7"	Parabolic	Round	7/16"	Split	3020A26	000000

Tap and Drill Bit Stands

For Drill Bits

These stands hold one of each bit size. Each hole is marked with the size.

		For Drill Bit		Overall
	Material	No. of	Size	Lg.	Wd.	Ht.		Each
For Inch Drill Bits







				For Jobbers' Length, Short Length, Extended Length

				Steel	29	1/16" to 1/2" (Increments of 1/64")	5 5/8"	2 5/8"	1 1/2"	2793A12	000000


				For Letter Size Drill Bits







								For Jobbers' Length, Short Length, Extended Length

								Steel	26	A to Z	5 5/8"	2 5/8"	1 1/2"	2793A18	00000

Carbide-Insert Drill Bits

Shown with Carbide Inserts

(Sold Separately)

When you need to drill dozens or even hundreds of holes, use a bit with replaceable carbide inserts. Once the cutting edges wear down, just change the inserts instead of sharpening or throwing the bit away. The holes in the bit channel coolant through the tool for more efficient chip evacuation. Also known as indexable drill bits.

Each drill bit requires two inserts—one on the inner cutting edge and one on the outer cutting edge. Replacement inserts are sold separately.

Drill Bits											Replacement Insert Screws
				Shank			For Insert
Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type	Inner Inscribed Circle Dia.	Outer Inscribed Circle Dia.		Each		Each



	7/8"	0.875"	5 5/8"	2.63"	Round	1"	Carbide Insert	0.268"	0.295"	2769N22	0000000	2780N13	00000

Drill Bit Inserts


Inner Inserts	Outer Inserts


Inner Inserts	Outer Inserts

								Each		Package
	For Drill Bit Size	IC Dia.	Thk.	Hole Dia.	Tip Radius	For Use On	Features		Each	Pkg. Qty.		Pkg.
Inner Inserts







				Titanium Aluminum Nitride (TiAlN)-Coated Carbide

				7/8"	0.268"	1/8"	1/8"	1/64"	Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	Chip Breakers	2776N17	000000	10	2776N341	0000000


				Outer Inserts







								Titanium Nitride (TiN)-Coated Carbide

								7/8"	0.295"	1/8"	1/8"	1/32"	Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened Steel	Chip Breakers	2776N18	00000	10	2776N349	000000

Short-Flute Cobalt Steel Drill Bits


Jobbers' Length Round Shank	Split

These bits combine the toughness and wear resistance of cobalt with short flutes for rigidity. The shallow drilling depth makes them less likely to wobble than other bits of the same length, so they stay centered and drill straighter. Cobalt lasts at least twice as long as high-speed steel. It can also run up to 25% faster at higher temperatures without damaging the bit on hard materials such as nickel.

Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.

Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these bits can last 50% longer than uncoated bits.

					Shank				Each
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type		1-4	5-Up
Jobbers' Length







				Black Oxide

				29/64"	0.4531"	5 5/8"	1.45"	Round	29/64"	Split	3146A139	000000	000000

Chip-Clearing High-Speed Steel Drill Bits for Aluminum, Brass, and Bronze

Jobbers' Length

Low Helix Flute

Round Shank

Standard

Designed for soft metals that can gum up other drill bits, wide flutes lift chips out of the hole. This prevents clogs that can weaken and damage the bit and ruin the hole. Also known as slow spiral bits, these are made of versatile high-speed steel.

Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.

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.

						Shank				Each
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Flute Type	Type	Size	Drill Bit Point Type		1-5	6-Up
Jobbers' Length







				Uncoated

				29/64"	0.4531"	5 5/8"	3.28"	Low Helix	Round	29/64"	Standard	2928A238	000000	000000

Undersized Hardened Multipurpose M2 High-Speed Tool Steel Rods

These rods, also known as drill blanks, have an undersized diameter for machining your own drill bits. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Dia.	Dia. Tolerance	Drill Bit Size	Lg.	Yield Strength	Hardness	Mechanical Finish		Each
0.4531"	-0.0002" to 0"	29/64"	5 5/8"	Not Rated	Rockwell C60 (Extra Hard)	Precision Ground	3009A142	000000
11.2 mm	-0.005 mm to 0 mm	11.2 mm	5 5/8"	Not Rated	Rockwell C60 (Extra Hard)	Precision Ground	2900A394	00000
11.3 mm	-0.005 mm to 0 mm	11.3 mm	5 5/8"	Not Rated	Rockwell C60 (Extra Hard)	Precision Ground	2900A395	00000
11.4 mm	-0.005 mm to 0 mm	11.4 mm	5 5/8"	Not Rated	Rockwell C60 (Extra Hard)	Precision Ground	2900A396	00000
11.5 mm	-0.005 mm to 0 mm	11.5 mm	5 5/8"	Not Rated	Rockwell C60 (Extra Hard)	Precision Ground	2900A397	00000

Cobalt Steel Ball End Mills with Two Milling Ends


Ball Cut Style	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 ball ends make them good for milling rounded slots, slopes, and contours. 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
	Dia.	Dia. Tolerance	Shank Dia.	Lg. of Cut	Overall Lg.	Flute Spacing	Helix Angle	For Use On	End Mill Type	Cut Style		Each
Uncoated Cobalt Steel







				4 Flutes

				3/4"	-0.0010" to 0.0010"	3/4"	1 5/8"	5 5/8"	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Ball	3253A23	0000000

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







				4 Flutes

				3/4"	-0.0025" to 0.0000"	3/4"	1 5/8"	5 5/8"	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	Square	8858A58	0000000

Left-Hand High-Speed Steel Drill Bits


Jobbers' Length Round Shank	Split

With flutes that spiral in the opposite direction of other bits, these are primarily used to remove stripped screws. Choose a bit that’s slightly smaller than the diameter of the screw’s head. Set your power tool to rotate in reverse. Slowly drill in the center of the screw head, maintaining constant pressure. As the bit penetrates, it will catch onto the screw and reverse it out of the hole. If the screw is badly stripped, you might need to punch a starter hole. Also known as reverse-flute bits. High-speed steel is the versatile choice for drilling most metals.

Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.

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.

					Shank				Each
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type		1-5	6-Up
Jobbers' Length







				Uncoated

				29/64"	0.4531"	5 5/8"	3.28"	Round	29/64"	Split	2876A411	000000	000000

Oversized Hardened Multipurpose M2 High-Speed Tool Steel Rods

Also known as reamer blanks, these rods have an oversized diameter that allows for finishing to your exact requirements. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Dia.	Dia. Tolerance	Reamer Size	Lg.	Fabrication	Yield Strength	Hardness	Mechanical Finish		Each
0.4531"	0" to 0.0002"	29/64"	5 5/8"	Hot Rolled	Not Rated	Rockwell C60 (Extra Hard)	Precision Ground	3023A242	000000

Tight-Tolerance Ultra-Heat-Resistant M42 High-Speed Tool Steel Rods

Machine saw blades, end mills, and other cutting tools that stay hard and sharp at top speeds and temperatures. M42 runs faster and hotter than other grades of high-speed tool steel, so it slices through material as tough as titanium without softening or wearing down. Precision ground and held to a strict tightness tolerance, this steel is all set to turn in your lathe. Also known as cobalt steel.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Dia.	Dia. Tolerance	Lg.	Yield Strength	Hardness	Mechanical Finish		Each
29/64"	-0.0002" to 0"	5 5/8"	Not Rated	Rockwell C65 (Extra Hard)	Precision Ground	8813A85	000000

High-Speed Steel Square End Mills with Two Milling Ends

3 Flutes

4 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.

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 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.

	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







				3 Flutes

				3/4"	-0.0015" to 0.0025"	3/4"	1 5/8"	5 5/8"	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	2847A77	0000000




						4 Flutes

						11/16"	-0.0025" to 0.0000"	3/4"	1 5/8"	5 5/8"	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	2873A44	000000


						3/4"	-0.0025" to 0.0000"	3/4"	1 5/8"	5 5/8"	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	2873A68	000000


						Titanium Nitride (TiN)-Coated High-Speed Steel







										4 Flutes

										11/16"	-0.0025" to 0.0000"	3/4"	1 5/8"	5 5/8"	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Tool Steel	Center Cutting	Square	8912A54	000000


										3/4"	-0.0025" to 0.0000"	3/4"	1 5/8"	5 5/8"	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Tool Steel	Center Cutting	Square	8912A47	000000