15/64" Shank Size Drill Bits

Maintenance Length—Shorter than jobbers' length, these bits are more rigid for less wobble when drilling hard material. Also known as mechanics’ bits.

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.

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.

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





				Black Oxide

				15/64"	0.2344"	3 7/8"	2.27"	Round	15/64"	Split	1	2901A123	00000
				15/64"	0.2344"	3 7/8"	2.27"	Round	15/64"	Split	12	2901A515	00000




						Titanium Nitride (TiN) Coated

						15/64"	0.2344"	3 7/8"	2.27"	Round	15/64"	Split	1	29115A723	0000
						15/64"	0.2344"	3 7/8"	2.27"	Round	15/64"	Split	12	29115A823	00000




								Titanium Aluminum Nitride (TiAlN) Coated

								15/64"	0.2344"	3 7/8"	2.27"	Round	15/64"	Split	1	3202A56	0000




										Uncoated

										15/64"	0.2344"	3 7/8"	2.27"	Round	15/64"	Standard	1	8870A26	0000
										15/64"	0.2344"	3 7/8"	2.27"	Round	15/64"	Standard	12	8870A126	00000


										Short Length





														Black Oxide

														15/64"	0.2344"	2 1/2"	0.96"	Round	15/64"	Split	1	2896A24	0000




																Titanium Nitride (TiN) Coated

																15/64"	0.2344"	2 1/2"	0.96"	Round	15/64"	Split	1	2908A43	0000




																		Uncoated

																		15/64"	0.2344"	2 1/2"	0.96"	Round	15/64"	Standard	1	8947A123	0000


																		Maintenance Length





	Gold Oxide

	15/64"																				0.2344"	3 3/8"	1.93"	Round/3-Flat	15/64"	Split	1	87755A33	0000
	15/64"	0.2344"																			3 3/8"	1.93"	Round/3-Flat	15/64"	Split	12	87755A13	00000


	Extended Length





				Black Oxide

				15/64"	0.2344"																	6 1/8"	3.39"	Round	15/64"	Standard	1	29315A132	0000
				15/64"	0.2344"																	8"	5.14"	Round	15/64"	Standard	1	29515A44	00000




																						Titanium Nitride (TiN) Coated

						15/64"	0.2344"															6 1/8"	3.75"	Round	15/64"	Standard	1	28965A738	00000




																						Uncoated

								15/64"	0.2344"													6 1/8"	3.75"	Round	15/64"	Standard	1	2939A72	0000
								15/64"	0.2344"													12"	8.53"	Round	15/64"	Standard	1	2939A18	00000

Carbide-Tipped Drill Bits for Masonry and Concrete

Crush rather than cut material so bits don’t jam or overheat while drilling masonry and concrete. The ultra-hard carbide tip breaks masonry into pieces and the widely spaced flutes channel them out of the hole. These bits stay sharp, resisting wear and heat that will dull or break other bits.

Hex Shank for Hammer and Rotary Drilling

The hex shape is less likely to slip in the chuck than a round shank. Use simultaneous rotary and hammering action to drill faster and penetrate material with less pressure than rotary-only bits. Also known as percussion or impact bits.

	Max. Drilling Dp.	Shank Size	Specs. Met		Each
Uncoated





	Standard Point

	1/4"	0.25"	4"	2"	15/64"	ANSI B212.15	8897A24	00000
	1/4"	0.25"	6"	4"	15/64"	ANSI B212.15	8897A2	0000
	1/4"	0.25"	13 1/2"	12"	15/64"	ANSI B212.15	8897A51	00000

Cobalt Steel Drill Bits

Jobbers' Length

Round Shank

Short Length

Round Shank

Extended 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.

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

				15/64"	0.2344"	3 7/8"	2.63"	Round	15/64"	Split	27995A523	00000




						Titanium Aluminum Nitride (TiAlN) Coated

						15/64"	0.234"	3 7/8"	2.63"	Round	15/64"	Split	27995A815	00000




								Uncoated

								15/64"	0.2344"	3 7/8"	2.16"	Round	15/64"	Split	3069A24	0000


								Short Length





												Titanium Nitride (TiN) Coated

												15/64"	0.2344"	2 1/2"	0.96"	Round	15/64"	Split	2416A23	00000




														Uncoated

														15/64"	0.2344"	2 1/2"	0.96"	Round	15/64"	Split	28765A23	0000


														Extended Length





																		Uncoated

																		15/64"	0.2344"	6 1/8"	3.28"	Round	15/64"	Split	3063A123	00000

Carbide Drill Bits


Jobbers' Length Round Shank	Short 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.

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

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

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.

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

				15/64"	0.2344"	3 1/4"	1.6"	Round	15/64"	Four Facet	27515A46	000000




						Titanium Aluminum Nitride (TiAlN) Coated

						15/64"	0.2344"	3 1/4"	1.6"	Round	15/64"	Four Facet	8879A66	00000




								Uncoated

								15/64"	0.2344"	3 1/4"	1.6"	Round	15/64"	Four Facet	2956A23	00000


								Short Length





												Uncoated

												15/64"	0.2344"	2 1/2"	0.8"	Round	15/64"	Four Facet	2956A66	00000

Carbide-Tipped Drill Bits for Glass and Ceramic

Spear Bit

The spear-shaped point grinds away glass and ceramic at a slow speed, reducing the chance of chipping and cracking. These bits are carbide-tipped steel, which is extremely hard and wear resistant to maintain a sharp edge cut after cut. Drilling requires a coolant, such as water.

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





				Carbide Tipped/Uncoated

				3/8"	0.375"	3 5/8"	1"	Round	15/64"	Standard	2954A5	000000

Left-Hand High-Speed Steel Drill Bits

Uncoated


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





				Gold Oxide

				15/64"	0.2344"	3 7/8"	2.5"	Round	15/64"	Split	88055A65	000000




						Uncoated

						15/64"	0.2344"	3 7/8"	2.15"	Round	15/64"	Standard	2876A25	00000

Carbide-Tipped Drill Bits

Jobbers' Length

Round Shank

Extended 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

				15/64"	0.2344"	3 7/8"	2.1"	Round	15/64"	Standard	2940A21	000000
				15/64"	0.2344"	3 7/8"	2.1"	Round	15/64"	Split	31575A16	00000


				Extended Length





								Uncoated

								15/64"	0.2344"	6 1/8"	3.16"	Round	15/64"	Standard	29465A18	00000

Chip-Clearing High-Speed Steel Drill Bits

Jobbers' Length

High Helix Flute

Round Shank

Jobbers' Length

Parabolic Flute

Round Shank

Extended 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

				15/64"	0.2344"	3 5/8"	1.78"	High Helix	Round	15/64"	Split	31115A53	00000
				15/64"	0.2344"	3 7/8"	2.15"	Parabolic	Round	15/64"	Split	29925A23	0000




						Titanium Nitride (TiN) Coated

						15/64"	0.2344"	3 7/8"	2.15"	Parabolic	Round	15/64"	Split	29925A63	00000




								Uncoated

								15/64"	0.2344"	3 7/8"	2.15"	Parabolic	Round	15/64"	Split	2754A53	0000
								15/64"	0.2344"	3 7/8"	2.27"	High Helix	Round	15/64"	Standard	2912A123	0000


								Extended Length





												Uncoated

												15/64"	0.2344"	8"	5.53"	Parabolic	Round	15/64"	Split	29745A38	00000

Short-Flute High-Speed Steel Drill Bits

Extended Length

Round Shank

Split

The rigidity of short-length bits without sacrificing reach. The shallow drilling depth makes these less likely to wobble than other bits of the same length, so they stay centered and drill straighter. High-speed steel is good for general purpose drilling in most metals.

Extended Length—Drill through panels and thick workpieces with our longest 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.

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





				Black Oxide

				15/64"	0.2344"	6"	2.3"	Round	15/64"	Split	2986A24	00000
				15/64"	0.2344"	12"	2.3"	Round	15/64"	Split	2986A58	00000

Short-Flute Cobalt Steel Drill Bits

Jobbers' Length

Round Shank

Extended 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.

Extended Length—Drill through panels and thick workpieces with our longest 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.

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





				Black Oxide

				15/64"	0.2344"	3 7/8"	0.96"	Round	15/64"	Split	3146A124	00000


				Extended Length





								Uncoated

								15/64"	0.2344"	6"	2.15"	Round	15/64"	Split	8934A23	00000
								15/64"	0.2344"	12"	2.15"	Round	15/64"	Split	8934A43	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	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Angle	Drill Bit Point Type	Bit Style		Each
Jobbers' Length





				Uncoated

				15/64"	0.2344"	3 1/4"	1.6"	Round	15/64"	140°	Brad	Fluted	2828A16	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



		15/64"	0.2344"	3 7/8"	2.63"	Round	15/64"	60°	Standard	27465A55	00000

Smooth-Finish Carbide Drill Bits

Jobbers' Length

Round Shank

Split

With more cutting edges than other drill bits, these cut continuously and consistently for a smoother finish. They also stay centered to produce holes that are straighter and more accurate. However, since there’s less space between the cutting edges, they don’t clear chips as quickly. Made of carbide, these are the hardest and most wear-resistant drill bits you can buy. They stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. 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.

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

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





				Uncoated

				15/64"	0.2344"	3 1/4"	1.6"	Round	15/64"	Split	3171A43	000000

Carbide Drill Bits for Hardened Steel

Short Length

Round Shank

Split

The hardest and most wear-resistant bits with the longest life. 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 stays sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. It 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.

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

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	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type		Each
Short Length





				Titanium Nitride (TiN) Coated

				15/64"	0.2344"	2 1/2"	0.8"	Round	15/64"	Split	8882A23	000000




						Uncoated

						15/64"	0.2344"	2 1/2"	0.8"	Round	15/64"	Four Facet	8944A23	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	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type		Each
Jobbers' Length





				Uncoated

				15/64"	0.2344"	4"	0.93"	Round	15/64"	Notched	2973A23	000000

Chip-Clearing Cobalt Steel Drill Bits

Jobbers' Length

Parabolic Flute

Round Shank

Split

Avoid clogs and dissipate heat with cobalt bits that last at least twice as long as high-speed steel. The flutes clear chips to improve coolant flow and prevent damage to the bit and the hole. They also speed up drilling since you don't have to stop to clear the bit manually.

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.	Flute Type	Type	Size	Drill Bit Point Type		Each
Jobbers' Length





				Titanium Nitride (TiN) Coated

				15/64"	0.2344"	3 5/8"	2.2"	Parabolic	Round	15/64"	Split	3183A53	000000




						Uncoated

						15/64"	0.2344"	3 5/8"	2.15"	Parabolic	Round	15/64"	Split	29925A923	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

				15/64"	0.2344"	3 5/8"	2.24"	Parabolic	Round	15/64"	Split	3020A21	000000

Hole-Starting Carbide Drill Bits

Short Length

Round Shank

Split

Harder and more wear resistant than cobalt steel, these carbide bits create an accurate starting place in your workpiece. Cut an indent, then continue drilling with a longer bit. The indent prevents slipping so the final hole is centered and precise. Carbide stays sharp at high temperatures and faster speeds. It 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.

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

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

					Shank			140° Point Angle
	Drill Bit Size	Decimal Size Equiv.	Overall Lg.	Max. Drilling Dp.	Type	Size	Drill Bit Point Type		Each
Short Length





				Titanium Nitride (TiN) Coated

				15/64"	0.2344"	2 1/2"	0.7"	Round	15/64"	Split	88915A28	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		1-11	12-Up
Jobbers' Length





				Uncoated

				15/64"	0.2344"	3 7/8"	2.15"	Low Helix	Round	15/64"	Standard	2928A223	00000	00000