95mm Long Drill Bits | McMaster-Carr

Extended Length—Drill through panels and thick workpieces with our longest bits. Their length is good for creating deep holes but makes them less rigid than other bits. As a result, they are more prone to wobbling or breaking, especially when drilling hard materials.

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.

Gold Oxide—Like black oxide, this finish adds wear resistance and reduces friction for improved chip flow. Because it’s less prone to flaking off, it offers better rust protection when bits aren't in use.

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, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Type	Size	Drill Bit Point Type	Pkg. Qty.		Pkg.
Jobbers' Length







				Gold Oxide

				5.2	0.2047"	95	62.3	Round	5.2 mm	Split	1	30565A274	00000


				5.2	0.2047"	95	62.3	Round	5.2 mm	Split	10	30565A435	00000
				5.3	0.2087"	95	62.3	Round	5.3 mm	Split	1	30565A275	0000
				5.4	0.2126"	95	62.3	Round	5.4 mm	Split	1	30565A276	0000
				5.5	0.2165"	95	62.3	Round	5.5 mm	Split	1	30565A277	0000
				5.5	0.2165"	95	62.3	Round	5.5 mm	Split	10	30565A436	00000




						Uncoated

						5.5	0.2165"	95	56.4	Round	5.5 mm	Standard	1	2951A135	0000


						Short Length







										Black Oxide

										10.8	0.4252"	95	47	Round	10.8 mm	Split	1	28255A133	00000


										11.0	0.4331"	95	24.9	Round	11 mm	Split	1	28255A63	00000
										11.5	0.4528"	95	47	Round	11.5 mm	Split	1	28255A135	00000
										11.8	0.4646"	95	47	Round	11.8 mm	Split	1	28255A136	00000




												Titanium Nitride (TiN) Coated

												11.0	0.4331"	95	48.3	Round	11 mm	Split	1	2979N33	00000


												Extended Length







																Black Oxide

																2.4	0.0945"	95	62	Round	2.4 mm	Standard	1	88455A116	0000


2.5																0.0984"	95	62	Round	2.5 mm	Standard	1	29315A311	00000




		Uncoated

		2.5	0.0984"													95	56.9	Round	2.5 mm	Standard	1	3083A128	0000

High-Speed Steel Step Drill Bits

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 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.

			Shank
Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Type	Size	Drill Bit Point Type		Each







			Titanium Aluminum Nitride (TiAlN) Coated

			4.0, 14.0, 16.0, 18.0, 20.0, 22.0, 24.0, 26.0, 28.0, 30.0	0.1575", 0.5512", 0.6299", 0.7087", 0.7874", 0.8661", 0.9449", 1.0236", 1.1024", 1.1811"	95	Hex	6.35 mm	Standard	89275A37	0000000

Carbide Drill Bits

Jobbers' Length

Round Shank

The hardest and most wear-resistant drill bits you can buy. Carbide bits stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.

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 bits, especially on materials like hardened steel, iron, and stainless steel.

Uncoated—Excellent for a range of materials but won't last as long as coated bits.

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







				Titanium Nitride (TiN) Coated

				8.0	0.315"	95	60	Round	8 mm	Four Facet	3030A85	000000




						Uncoated

						7.5	0.2953"	95	60	Round	7.5 mm	Four Facet	3030A35	00000


						8.0	0.315"	95	48	Round	8 mm	Four Facet	3030A36	00000

Carbide-Tipped Drill Bits

Jobbers' Length

Round Shank

Short 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.

Short Length—The most rigid bits for drilling the straightest holes.

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







				Uncoated

				5.0	0.1969"	95	50.8	Round	5 mm	Standard	28595A59	000000


				5.0	0.1969"	95	62	Round	5 mm	Split	28595A25	00000
				5.5	0.2165"	95	50.8	Round	5.5 mm	Standard	28595A61	00000
				5.5	0.2165"	95	64	Round	5.5 mm	Split	28595A26	00000


				Short Length







								Uncoated

								12.5	0.4921"	95	37.5	Round	12.5 mm	Standard	28805A422	00000

Cobalt Steel Drill Bits

Jobbers' Length

Round Shank

Short Length

Round 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.

Short Length—The most rigid bits for drilling the straightest holes.

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

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







				Uncoated

				5.4	0.2126"	95	62.3	Round	5.4 mm	Split	29355A83	00000


				Short Length







								Uncoated

								11.0	0.4331"	95	24.9	Round	11 mm	Split	2456N136	00000

Carbide-Tipped Drill Bits for Hardened Steel

Jobbers' Length

Round Shank

Straight flutes withstand the heavy pressure needed to penetrate hardened steel. These bits cut more aggressively and resist stress better than spiral-flute bits. A lower-priced alternative to solid carbide, they stay sharp when drilling abrasive material but won’t last as long.

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

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







				Uncoated

				5.0	0.1969"	95	20	Round	5 mm	Notched	2973A62	000000


				5.5	0.2165"	95	22	Round	5.5 mm	Notched	2973A63	00000

Carbide Drill Bits for Carbon Fiber, Fiberglass, and Graphite

Jobbers' Length

Cut clean holes in abrasive material without fraying or delaminating the surface. Made of carbide, these bits resist wear to retain a sharp edge, even after after hundreds of cuts.

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







				Diamond Coated

				8.0	0.315"	95	60	Round	8	140°	Brad	Fluted	3162A66	000000




						Uncoated

						7.5	0.2953"	95	60	Round	7.5	140°	Brad	Fluted	2828A125	00000


						8.0	0.315"	95	60	Round	8	140°	Brad	Fluted	2828A126	00000

Left-Hand Cobalt Steel Drill Bits


Jobbers' Length Round Shank	Split

The flutes spiral in the opposite direction of other bits and stay sharp longer than high-speed steel. They’re 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.

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

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

					Shank				Each
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Type	Size	Drill Bit Point Type		1-9	10-Up
Jobbers' Length







				Uncoated

				5.5	0.2165"	95	64	Round	5.5 mm	Split	3474A57	000000	000000

High-Speed Steel Square End Mills

2 Flutes

4 Flutes

Use these end mills for general purpose milling in most material, such as aluminum, brass, bronze, iron, and steel. They have a square end for milling square slots, pockets, and edges.

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.

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

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







				2 Flutes

				20	0.000 to 0.025	19	38.1	95	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	8853A85	000000




						4 Flutes

						16	0.000 to 0.038	15.9	41.3	95	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	8854A31	00000


						18	0.000 to 0.038	15.9	41.3	95	Equal	30°	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Center Cutting	Square	8854A82	00000


						Titanium Nitride (TiN)-Coated High-Speed Steel







										2 Flutes

										20	0.000 to 0.025	19	38.1	95	Equal	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Stainless Steel, Steel, Tool Steel	Center Cutting	Square	8694A37	00000