102mm Long Drill Bits | McMaster-Carr

Filter by

System of Measurement

Drill Bit Size

For Use On

Length Class

Drill Bit Point Type

Decimal Size Equivalent

Finish

Material

Point Angle

Shank Size

Maximum Drilling Depth

Flute Direction

Shank Type

Overall Length

Sold As

Flute Type

Bit Style

Number of Flutes

USMCA Qualifying

Specifications Met

REACH Compliance

RoHS Compliance

DFARS Compliance

Forward

How can we improve?

28 Products

Drill Bits

Cut holes in a variety of metals, from the softest aluminum to the hardest steel.

High-Speed Steel Jobbers' Length

Round Shank

Standard

Split

Our basic drill bit material is also the most versatile. These jobbers' bits have the balance of rigidity and length needed for most applications.

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.

Round Shank—The most common shank type. These fit in the chuck of drill presses and portable drills.

Standard Point—Good for general purpose drilling. You’ll need to make a pilot hole to center the bit.

Split Point—Starts cutting on contact so you don’t need a pilot hole. The point also keeps the bit centered for straight and accurate holes, even with a portable drill.

						Shank
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Flute Type	Type	Size, mm	Drill Bit Point Type	No. of Flutes	Specs. Met	Pkg. Qty.		Pkg.
Gold Oxide





				Metric
				6.0	0.2362"	102	66.7	Spiral	Round	6	Split	2	NAS907 Type B	1	000000000	00000
				6.0	0.2362"	102	66.7	Spiral	Round	6	Split	2	NAS907 Type B	10	000000000	00000
				6.1	0.2402"	102	66.7	Spiral	Round	6.1	Split	2	NAS907 Type B	1	000000000	0000
				6.2	0.2441"	102	66.7	Spiral	Round	6.2	Split	2	NAS907 Type B	1	000000000	0000
				6.3	0.248"	102	66.7	Spiral	Round	6.3	Split	2	NAS907 Type B	1	000000000	0000

				Uncoated





								Metric
								6.0	0.2362"	102	56.4	Spiral	Round	6	Standard	2	—	1	00000000	0000

High-Speed Steel Short Length

Round Shank


Standard	Split

Our shortest high-speed steel bits, these are the most rigid for drilling the straightest holes. They're also good for tight spaces where longer bits can't fit. Also known as screw-machine and stub-length 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.

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.

Round Shank—The most common shank type. These fit in the chuck of drill presses and portable drills.

Standard Point—Good for general purpose drilling. You’ll need to make a pilot hole to center the bit.

Split Point—Starts cutting on contact so you don’t need a pilot hole. The point also keeps the bit centered for straight and accurate holes, even with a portable drill.

						Shank
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Flute Type	Type	Size, mm	Drill Bit Point Type	No. of Flutes	Specs. Met		Each
Black Oxide





				Metric
				12.0	0.4724"	102	27	Spiral	Round	12	Split	2	DIN 1897	00000000	000000
				12.2	0.4803"	102	51	Spiral	Round	12.2	Split	2	DIN 1897	000000000	00000
				12.5	0.4921"	102	51	Spiral	Round	12.5	Split	2	DIN 1897	000000000	00000
				13.0	0.5118"	102	32.5	Spiral	Round	13	Standard	2	DIN 1897	00000000	00000

				Titanium Nitride (TiN) Coated





								Metric
								12.0	0.4724"	102	50.8	Spiral	Round	12	Split	2	DIN 1897	0000000	00000
								13.0	0.5118"	102	50.8	Spiral	Round	13	Split	2	DIN 1897	0000000	00000

Cobalt Steel Jobbers' Length

Round Shank

Split

The toughness and wear resistance of cobalt steel in a length that's rigid enough for most applications. 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.

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

Round Shank—The most common shank type. These fit in the chuck of drill presses and portable drills.

Split Point—Starts cutting on contact so you don’t need a pilot hole. The point also keeps the bit centered for straight and accurate holes, even with a portable drill.

						Shank
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Flute Type	Type	Size, mm	Drill Bit Point Type	No. of Flutes	Specs. Met		Each
Titanium Nitride (TiN) Coated





				Metric
				6.5	0.2559"	102	63	Spiral	Round	6.5	Split	2	DIN 338	0000000	000000
				6.7	0.2638"	102	63	Spiral	Round	6.7	Split	2	DIN 338	0000000	00000

Cobalt Steel Short Length

Round Shank

Split

Combine the toughness and wear resistance of cobalt steel with a short length for drilling the straightest holes. These last twice as long as high-speed steel and can run up to 25% faster at higher temperatures without damaging the bit on hard metals like nickel. Also known as screw-machine and stub-length bits, they fit in tight spaces where longer bits can't.

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

Round Shank—The most common shank type. These fit in the chuck of drill presses and portable drills.

Split Point—Starts cutting on contact so you don’t need a pilot hole. The point also keeps the bit centered for straight and accurate holes, even with a portable drill.

						Shank
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Flute Type	Type	Size, mm	Drill Bit Point Type	No. of Flutes	Specs. Met		Each
Uncoated





				Metric
				12.0	0.4724"	102	26.9	Spiral	Round	12	Split	2	DIN 1897	00000000	000000
				13.0	0.5118"	102	24.9	Spiral	Round	13	Split	2	DIN 1897	00000000	00000

Carbide-Tipped Steel Jobbers' Length

Round Shank


Standard	Split

The performance of solid carbide but at a lower price point. These jobbers' bits have the balance of rigidity and length needed for most applications. Like carbide bits, they 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.

Round Shank—The most common shank type. These fit in the chuck of drill presses and portable drills.

Standard Point—Good for general purpose drilling. You’ll need to make a pilot hole to center the bit.

Split Point—Starts cutting on contact so you don’t need a pilot hole. The point also keeps the bit centered for straight and accurate holes, even with a portable drill.

						Shank
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Flute Type	Type	Size, mm	Drill Bit Point Type	No. of Flutes		Each
Uncoated Carbide Tipped





				Metric
				6.0	0.2362"	102	53.3	Spiral	Round	6	Standard	2	00000000	000000
				6.0	0.2362"	102	70	Spiral	Round	6	Split	2	00000000	00000

Carbide-Tipped Steel Short Length

Round Shank

Standard

Our shortest and most rigid bits, these offer the performance of solid carbide at a lower price point. Like carbide bits, they are stronger than cobalt and high-speed steel to maintain their sharp edges when drilling abrasive material. However, when drilling tough metals like cast iron and hardened steel, upgrade to carbide for longer life.

Round Shank—The most common shank type. These fit in the chuck of drill presses and portable drills.

Standard Point—Good for general purpose drilling. You’ll need to make a pilot hole to center the bit.

						Shank
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Flute Type	Type	Size, mm	Drill Bit Point Type	No. of Flutes		Each
Uncoated Carbide Tipped





				Metric
				14.0	0.5512"	102	42	Spiral	Round	14	Standard	2	000000000	000000

Chip-Clearing Drill Bits

With flutes that lift chips out of the hole, you don't have to stop drilling to clear these bits manually. The flutes improve coolant flow to dissipate heat and prevent clogs that can damage the bit and ruin the hole.

Cobalt Steel Jobbers' Length

Parabolic Flute

Split

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

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 deep holes.

Round Shank—The most common shank type. These fit in the chuck of drill presses and portable drills.

Split Point—Starts cutting on contact so you don’t need a pilot hole. The point also keeps the bit centered for straight and accurate holes, even with a portable drill.

						Shank
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Flute Type	Type	Size, mm	Drill Bit Point Type	No. of Flutes	Specs. Met		Each
Uncoated





				Metric
				6.5	0.2559"	102	63	Parabolic	Round	6.5	Split	2	DIN 338	0000000	00000
				6.7	0.2638"	102	63	Parabolic	Round	6.7	Split	2	DIN 338	0000000	0000

Drill Bits for Hardened Steel

Straight flutes withstand the heavy pressure needed to penetrate hardened steel. These bits cut more aggressively and resist stress better than spiral-flute bits.

Carbide-Tipped Steel Jobbers' Length

Straght Flute

The performance of solid carbide but at a lower price point. These jobbers' bits have the balance of rigidity and length needed for most applications. Like carbide bits, they are extremely stronger and maintain their sharp edges when drilling abrasive material. But for the longest life, there is no beating carbide.

Round Shank—The most common shank type. These fit in the chuck of drill presses and portable drills.

Notched Point—The chisel-like point keeps the bit centered and clears chips.

						Shank
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Flute Type	Type	Size, mm	Drill Bit Point Type	No. of Flutes		Each
Uncoated Carbide Tipped





				Metric
				6.0	0.2362"	102	24	Straight	Round	6	Notched	2	0000000	000000

Hole-Starting Drill Bits

Create an accurate starting place in your workpiece. Cut an indent with these bits, then continue drilling with a longer bit. The indent prevents slipping so the final hole is centered and precise. Also known as spotting drill bits.

Cobalt Steel Short Length

Spiral Flute

Round Shank

Standard

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

90° Point Angle—Chamfers holes that will be followed by a smaller drill bit size.

Round Shank—The most common shank type. These fit in the chuck of drill presses and portable drills.

Standard Point—Perform best in stationary tools, such as a drill press.

						Shank				90° Point Angle
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Flute Type	Type	Size, mm	Drill Bit Point Type	No. of Flutes		Each
Uncoated


		12.0	0.4724"	102	31.7	Spiral	Round	12	Standard	2	00000000	000000

Coolant-Fed Drill Bits

Channel coolant through the holes to reduce heat and evacuate chips more efficiently than other bits. These are designed for CNC machines that supply coolant through the spindle rather than an external source, such as a hose and nozzle. Coolant flows directly from the bit's tip onto the drilling surface. This speeds up cuts and leads to excellent performance in deep holes and tough materials such as stainless steel and titanium.

Carbide Jobbers' Length

Spiral Flute

Round Shank

The hardest and most wear-resistant drill bits you can buy in a length that's rigid enough for most applications. These 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.

Titanium Aluminum Nitride (TiAlN) Coated—No drill bits last longer. These are the best for high-speed, high-temperature drilling of very hard and abrasive materials, including titanium and fiberglass.

Round Shank—The most common shank type fits in a drill press chuck.

Four-Facet Point—The most accurate point style, it centers the bit without a pilot hole and keeps the bit stable while drilling hard metals.

						Shank
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Flute Type	Type	Size, mm	Drill Bit Point Type	No. of Flutes		Each
Titanium Aluminum Nitride (TiAlN) Coated





				Metric
				8.5	0.3346"	102	61	Spiral	Round	10	Four Facet	2	00000000	0000000
				9.0	0.3543"	102	61	Spiral	Round	10	Four Facet	2	00000000	000000
				9.5	0.374"	102	61	Spiral	Round	10	Four Facet	2	00000000	000000
				10.0	0.3937"	102	61	Spiral	Round	10	Four Facet	2	00000000	000000

Left-Hand Drill Bits

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.

Cobalt Steel Jobbers' Length

Spiral Flute

Round Shank

Split

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

Round Shank—The most common shank type. These fit in the chuck of drill presses and portable drills.

Split Point—Easier to start holes and stay centered than standard-point bits.

						Shank
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Flute Type	Type	Size, mm	Drill Bit Point Type	No. of Flutes	Specs. Met		Each
Uncoated





				Metric
				6.0	0.2362"	102	70	Spiral	Round	6	Split	2	NAS907 Type J	0000000	000000