114mm Long Drill Bits | McMaster-Carr

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21 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
				7.7	0.3032"	114	79.8	Spiral	Round	7.7	Split	2	NAS907 Type B	1	000000000	00000
				7.8	0.3071"	114	79.8	Spiral	Round	7.8	Split	2	NAS907 Type B	1	000000000	0000
				7.9	0.311"	114	79.8	Spiral	Round	7.9	Split	2	NAS907 Type B	1	000000000	0000
				8.0	0.315"	114	79.8	Spiral	Round	8	Split	2	NAS907 Type B	1	000000000	0000
				8.0	0.315"	114	79.8	Spiral	Round	8	Split	2	NAS907 Type B	5	000000000	00000

				Uncoated





								Metric
								8.0	0.315"	114	74.6	Spiral	Round	8	Standard	2	—	1	00000000	0000

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.

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						Each
	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		1-4	5-Up
Uncoated





				Metric
				7.7	0.3032"	114	80.2	Spiral	Round	7.7	Split	2	NAS907 Type J	000000000	000000	00000
				8.0	0.315"	114	80.2	Spiral	Round	8	Split	2	NAS907 Type J	000000000	00000	0000

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
				8.0	0.315"	114	66	Spiral	Round	8	Standard	2	00000000	000000
				8.0	0.315"	114	81	Spiral	Round	8	Split	2	00000000	00000

Carbide Jobbers' Length

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 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 metals, they perform best when used on steel, aluminum, brass, and bronze.

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 Nitride (TiN) Coated





				Metric
				10.0	0.3937"	114	73	Spiral	Round	10	Four Facet	2	0000000	000000

				Uncoated





								Metric
								10.0	0.3937"	114	58.4	Spiral	Round	10	Four Facet	2	0000000	00000
								10.5	0.4134"	114	73	Spiral	Round	10.5	Four Facet	2	0000000	000000
								11.0	0.4331"	114	73	Spiral	Round	11	Four Facet	2	0000000	000000

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
				7.5	0.2953"	114	30	Straight	Round	7.5	Notched	2	0000000	000000
				8.0	0.315"	114	32	Straight	Round	8	Notched	2	0000000	00000

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
				8.0	0.315"	114	81	Spiral	Round	8	Split	2	NAS907 Type J	0000000	000000

Drill Bits for Carbon Fiber, Fiberglass, and Graphite

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.

Carbide Jobbers' Length

Diamond Coated—With the hardest finish, these bits have the longest life.

Brad Point—The sharp center point starts the hole and keeps the bit centered as you drill. Two cutting edges make clean holes, often for installing dowel pins and other hardware.

					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	No. of Flutes		Each
Uncoated





				Metric
				10.0	0.3937"	114	73	Round	10	140°	Brad	Fluted	2	00000000	0000000
				10.5	0.4134"	114	73	Round	10.5	140°	Brad	Fluted	2	00000000	000000
				11.0	0.4331"	114	73	Round	11	140°	Brad	Fluted	2	00000000	000000

				Diamond Coated





								Metric
								10.0	0.3937"	114	73	Round	10	140°	Brad	Fluted	2	0000000	000000