57mm Long Drill Bits | McMaster-Carr

				Shank					Each		Pkg.
Drill Bit Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style	Specifications Met	For Use On		Each	Pkg. Qty.		Pkg.
Metric
Black-Oxide High-Speed Steel
2.4 mm	0.0945"	57mm	25.2mm	Round	2.4mm	Standard	DIN 338	Steel, Iron, Stainless Steel	0000000	00000	__	000000	00
2.5 mm	0.0984"	57mm	25mm	Round	2.5mm	Standard	DIN 338	Steel, Iron, Stainless Steel	0000000	0000	10	00000000	000000
2.6 mm	0.1024"	57mm	24.8mm	Round	2.6mm	Standard	DIN 338	Steel, Iron, Stainless Steel	0000000	0000	__	000000	00
Black-and-Gold Oxide High-Speed Steel
2.2 mm	0.0866"	57mm	25.4mm	Round	2.2mm	Split	NAS907 Type B	Steel, Iron, Stainless Steel	000000000	0000	10	000000000	00000
2.3 mm	0.0906"	57mm	25.4mm	Round	2.3mm	Split	NAS907 Type B	Steel, Iron, Stainless Steel	000000000	0000	__	000000	00
Titanium-Nitride (TiN) Coated High-Speed Steel
2.4 mm	0.0945"	57mm	25.2mm	Round	2.4mm	Standard	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic	0000000	0000	__	000000	00
2.5 mm	0.0984"	57mm	25mm	Round	2.5mm	Standard	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic	0000000	0000	__	000000	00
2.6 mm	0.1024"	57mm	24.8mm	Round	2.6mm	Standard	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic	0000000	0000	__	000000	00

Short-Length Drill Bits

Titanium Nitride (TiN) Coated

Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than jobbers'- and maintenance-length drill bits.

Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated and black-oxide drill bits.

Drill bits with a split point keep centered without a pilot hole.

For technical drawings and 3-D models, click on a part number.

				Shank					Each
Drill Bit Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style	Specifications Met	For Use On		Each
Metric
Titanium-Nitride (TiN) Coated High-Speed Steel
4.5 mm	0.1772"	57mm	23.9mm	Round	4.5mm	Split	DIN 1897	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic	0000000	00000

Chip-Clearing Drill Bits

Titanium-Nitride (TiN) Coated Parabolic Spiral Flute

Parabolic Flute

Black-Oxide Spiral Flute

These jobbers'-length bits have the rigidity and length required for most applications. The flutes are designed to lift chips out of the hole, reducing clogging and improving coolant flow.

Parabolic spiral flute drill bits have wider flutes for more efficient chip evacuation than spiral-flute bits.

Black-oxide drill bits produce less friction than uncoated drill bits.

Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated and black-oxide drill bits.

Drill bits with a split point keep centered without a pilot hole.

For technical drawings and 3-D models, click on a part number.

				Shank
Drill Bit Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style	For Use On	Specifications Met		Each
Metric—Parabolic Spiral Flute
Titanium-Nitride (TiN) Coated High-Speed Steel
2.5 mm	0.0984"	57mm	30mm	Round	2.5mm	Split	Steel, Iron, Aluminum, Brass, Bronze, Plastic	DIN 338	0000000	00000
Uncoated High-Speed Steel
2.5 mm	0.0984"	57mm	25mm	Round	2.5mm	Split	Steel, Iron, Aluminum, Brass, Bronze, Plastic	DIN 338	0000000	0000
Metric—Spiral Flute
Black-Oxide High-Speed Steel
2.5 mm	0.0984"	57mm	25mm	Round	2.5mm	Split	Steel, Iron, Stainless Steel	DIN 338	00000000	0000

Cobalt Steel Drill Bits

Titanium Nitride (TiN) Coated

Titanium Aluminum Nitride (TiAlN) Coated

Gold Oxide

These jobbers'-length bits have the rigidity and length required for most applications. Made of cobalt steel, which has better heat and wear resistance than high-speed steel, they can run up to 25% faster and have a longer tool life.

Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated drill bits.

Titanium-aluminum-nitride (TiAlN) coated drill bits are the most wear and temperature resistant for the longest life and highest drilling speeds.

Gold-oxide drill bits produce less friction than uncoated drill bits.

Drill bits with a split point keep centered without a pilot hole.

For technical drawings and 3-D models, click on a part number.

				Shank					Each
Drill Bit Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style	Specifications Met	For Use On		Each
Metric
Titanium-Nitride (TiN) Coated Cobalt Steel
2.4 mm	0.0945"	57mm	30mm	Round	2.4mm	Split	DIN 338, NAS907 Type J	Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass	0000000	00000
2.5 mm	0.0984"	57mm	30mm	Round	2.5mm	Split	DIN 338	Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass	0000000	0000
2.6 mm	0.1024"	57mm	30mm	Round	2.6mm	Split	DIN 338, NAS907 Type J	Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass	0000000	0000
Titanium-Aluminum-Nitride (TiAlN) Coated Cobalt Steel
2.4 mm	0.0945"	57mm	30mm	Round	2.4mm	Split	DIN 338, NAS907 Type J	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass	00000000	00000
2.5 mm	0.0984"	57mm	26.3mm	Round	2.5mm	Split	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass	00000000	00000
2.6 mm	0.1024"	57mm	30mm	Round	2.6mm	Split	DIN 338, NAS907 Type J	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass	00000000	00000
Gold-Oxide Cobalt Steel
2.4 mm	0.0945"	57mm	25.2mm	Round	2.4mm	Split	NAS907 Type J	Steel, Hardened Steel, Iron, Stainless Steel, Nickel	00000000	0000
2.5 mm	0.0984"	57mm	25mm	Round	2.5mm	Split	NAS907 Type J	Steel, Hardened Steel, Iron, Stainless Steel, Nickel	00000000	0000
2.6 mm	0.1024"	57mm	24.8mm	Round	2.6mm	Split	NAS907 Type J	Steel, Hardened Steel, Iron, Stainless Steel, Nickel	00000000	0000

Chip-Clearing Cobalt Steel Drill Bits

Uncoated

The parabolic spiral flutes lift chips out of the hole, reducing clogging and improving coolant flow. With better heat and wear resistance than high-speed steel, these cobalt steel bits can run up to 25% faster and have a longer tool life. All are jobbers’ length so they have the rigidity and length required for most applications. A split point keeps the bit centered without a pilot hole.

For technical drawings and 3-D models, click on a part number.

				Shank
Drill Bit Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style	Specifications Met	For Use On		Each
Metric—Parabolic Spiral Flute
Uncoated Cobalt Steel
2.2 mm	0.0866"	57mm	32mm	Round	2.2mm	Split	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel	00000000	00000
2.25 mm	0.0886"	57mm	32mm	Round	2.25mm	Split	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel	00000000	0000
2.3 mm	0.0906"	57mm	32mm	Round	2.3mm	Split	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel	00000000	0000
2.35 mm	0.0925"	57mm	32mm	Round	2.35mm	Split	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel	00000000	0000
2.4 mm	0.0945"	57mm	30mm	Round	2.4mm	Split	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel	00000000	0000
2.45 mm	0.0965"	57mm	30mm	Round	2.45mm	Split	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel	00000000	0000
2.5 mm	0.0984"	57mm	30mm	Round	2.5mm	Split	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel	0000000	0000
2.55 mm	0.1004"	57mm	30mm	Round	2.55mm	Split	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel	00000000	0000
2.6 mm	0.1024"	57mm	30mm	Round	2.6mm	Split	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel	00000000	0000
2.65 mm	0.1043"	57mm	30mm	Round	2.65mm	Split	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel	00000000	0000

Carbide Drill Bits

Uncoated

Titanium Nitride (TiN) Coated

These jobbers'-length bits have the rigidity and length required for most applications. Made of solid carbide for the highest accuracy and longest tool life, they are harder, stronger, and more wear resistant than high-speed steel, cobalt steel, and carbide-tipped bits. They retain a sharp, hard edge at high temperatures for the best performance on hard and abrasive material. The four-facet point keeps the bit centered without a pilot hole. These bits require rigid toolholding to prevent breakage and should not be used in hand-held drilling applications.

Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated drill bits.

For technical drawings and 3-D models, click on a part number.

				Shank
Drill Bit Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style	For Use On		Each
Metric
Uncoated Carbide
3.0 mm	0.1181"	57mm	25.6mm	Round	3mm	Four Facet	Steel, Iron, Stainless Steel, Aluminum, Brass, Bronze, Plastic	0000000	000000
Titanium-Nitride (TiN) Coated Carbide
3.0 mm	0.1181"	57mm	32mm	Round	3mm	Four Facet	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass	0000000	00000

Carbide Drill Bits for Hardened Steel

Carbide Shank with Uncoated Carbide Bit

Harder, stronger, and more wear resistant than carbide-tipped steel, solid-carbide bits maintain their sharp edges longer. They require rigid toolholding to prevent breakage and should not be used in hand-held drilling applications. The straight flutes withstand the heavy pressure necessary to penetrate hard steel. A four-facet or split point keeps the bit centered without a pilot hole. These bits are short length, also known as screw machine or stub length, which provides maximum rigidity for drilling straighter holes than jobbers'-length drill bits.

For technical drawings and 3-D models, click on a part number.

				Shank				Uncoated Carbide
Drill Bit Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	No. of Flutes	For Max. Hardness	Point Style		Each
Metric
Carbide Shank
3.0 mm	0.1181"	57mm	12.8mm	Round	3mm	2	Rockwell C45	Split	0000000	000000

Drill Bits for Carbon Fiber, Fiberglass, and Graphite

Uncoated Brad Point

Diamond-Coated Brad Point

These jobbers'-length bits have the rigidity and length required for most applications. They are designed to make clean holes in abrasive material. Their point keeps the bit centered without a pilot hole.

Uncoated drill bits have three drill points that make clean holes in fiber-reinforced composites without fraying or delaminating the material.

Diamond-coated drill bits are highly wear resistant for drilling in abrasive material. They last longer than uncoated bits.

For technical drawings and 3-D models, click on a part number.

				Shank
Drill Bit Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style		Each
Metric
Uncoated Carbide
3.0 mm	0.1181"	57mm	32mm	Round	3mm	Brad	00000000	000000
Diamond-Coated Carbide
3.0 mm	0.1181"	57mm	32mm	Round	3mm	Brad	0000000	00000

Cobalt Steel Drill Bits for Stainless Steel and Nickel

Cobalt steel and a titanium aluminum nitride (TiAlN) coating provide the heat and wear resistance necessary for drilling in stainless steel and nickel alloys. These bits have parabolic spiral flutes, which lift chips out of the hole to reduce clogging and improve coolant flow. They are jobbers' length and have the rigidity and length required for most hand-held drilling and machine tool applications.

For technical drawings and 3-D models, click on a part number.

				Shank
Drill Bit Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style	Specifications Met		Each
Metric—Parabolic Spiral Flute
Titanium-Aluminum-Nitride (TiAlN) Coated Cobalt Steel
2.5 mm	0.0984"	57mm	30mm	Round	2.5mm	Split	DIN 338	0000000	000000

High-Speed Steel Left-Hand Drill Bits

Uncoated

Also known as reverse-flute bits, the flutes spiral in the opposite direction of other bits. Use in counterclockwise drilling applications such as removing broken screws. These bits are jobbers' length and have the rigidity and length required for most applications.

For technical drawings and 3-D models, click on a part number.

				Shank
Drill Bit Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style	For Use On	Specifications Met		Each
Metric
Uncoated High-Speed Steel
2.5 mm	0.0984"	57mm	23.7mm	Round	2.5mm	Standard	Steel, Iron, Aluminum, Brass, Bronze, Plastic	DIN 338	00000000	00000

Carbide Hole-Starting Drill Bits

90° Point Angle

120° Point Angle

140° Point Angle

Harder, stronger, and more wear resistant than cobalt steel, solid-carbide bits maintain their sharp edges longer. They require rigid toolholding to prevent breakage and should not be used in hand-held drilling applications. The short flute and length keep these bits straight for accurate placement when starting holes that will be drilled deeper with a longer bit. Also known as spotting drill bits.

Bits with a 90° point angle are for centering and chamfering holes that will be followed by a smaller drill bit size.

Bits with a 120° point angle are for starting a hole that will be followed by a drill bit with a point angle from 90° to 118°.

Bits with a 140° point angle are for starting a hole that will be followed by a drill bit with a point angle from 118° to 135°.

For technical drawings and 3-D models, click on a part number.

				Shank
Drill Bit Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style	For Use On		Each
90° Point Angle
Metric
Uncoated Carbide
3 mm	0.1181"	57mm	3mm	Round	3mm	Standard	Steel, Iron, Stainless Steel, Aluminum, Brass, Bronze, Plastic	00000000	000000
120° Point Angle
Metric
Uncoated Carbide
3 mm	0.1181"	57mm	3mm	Round	3mm	Standard	Steel, Iron, Stainless Steel, Aluminum, Brass, Bronze, Plastic	00000000	00000
140° Point Angle
Metric
Uncoated Carbide
3 mm	0.1181"	57mm	3mm	Round	3mm	Standard	Steel, Iron, Stainless Steel, Aluminum, Brass, Bronze, Plastic	00000000	00000

Cobalt Steel Drill/Mill End Mills

Drill/Mill Cut Style

Made of cobalt steel, these end mills have good heat and wear resistance, so they can run at high speeds in hard material. A 90° pointed tip allows them to be used for drilling as well as for slotting, profiling, and chamfering cuts. All are center cutting, allowing plunge cuts into a surface.

Use uncoated end mills for general purpose milling and short production runs.

For technical drawings and 3-D models, click on a part number.

Uncoated
Mill Dia.	Shank Dia.	Lg. of Cut	Overall Lg.	Flute Spacing	Point Angle	Helix Angle	For Use On	End Mill Type		Each
2 Flute
6mm	6mm	13mm	57mm	Equal	90°	30°	Aluminum, Brass, Bronze, Hardened Steel, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel	Center Cutting	0000000	000000