15mm Drill Bits | McMaster-Carr

				Shank					Each		Pkg.
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
1.5 mm	0.0591"	40mm	15mm	Round	1.5mm	Standard	DIN 338	Steel, Iron, Stainless Steel	0000000	00000	12	00000000	000000
Titanium-Nitride (TiN) Coated High-Speed Steel
1.5 mm	0.0591"	40mm	15mm	Round	1.5mm	Standard	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic	0000000	0000	__	000000	00

Chip-Clearing Drill Bits

Uncoated Parabolic Spiral Flute

Black-Oxide Spiral Flute

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.

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
Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style	For Use On	Specifications Met		Each
Metric—Parabolic Spiral Flute
Uncoated High-Speed Steel
1.5 mm	0.0591"	40mm	15mm	Round	1.5mm	Split	Steel, Iron, Aluminum, Brass, Bronze, Plastic	DIN 338	0000000	00000
Metric—Spiral Flute
Black-Oxide High-Speed Steel
1.5 mm	0.0591"	40mm	15mm	Round	1.5mm	Standard	Steel, Iron, Stainless Steel	DIN 338	00000000	0000

Cobalt Steel Drill Bits

Uncoated

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.

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
Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style	Specifications Met	For Use On		Each
Metric
Uncoated Cobalt Steel
1.5 mm	0.0591"	40mm	15mm	Round	1.5mm	Split	NAS907 Type J	Steel, Hardened Steel, Iron, Stainless Steel, Nickel	00000000	00000

Short-Length Cobalt Steel Drill Bits

Uncoated

Titanium Nitride (TiN) Coated

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

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

				Shank					Each
Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style	Specifications Met	For Use On		Each
Metric
Uncoated Cobalt Steel
4.5 mm	0.1772"	59mm	15mm	Round	4.5mm	Split	DIN 1897	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel	00000000	00000
Titanium-Nitride (TiN) Coated Cobalt Steel
4.5 mm	0.1772"	59mm	15mm	Round	4.5mm	Split	DIN 1897	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass	00000000	0000

Short-Length Carbide-Tipped Drill Bits

Also known as screw-machine and stub-length bits, these provide maximum rigidity for drilling straighter holes than standard-length drill bits. Made of carbide-tipped steel, which has better wear resistance than high-speed steel and cobalt steel, they maintain a sharper, harder edge at high temperatures for excellent performance on abrasive material, such as plastic. Because they aren’t as brittle as solid carbide bits, they can be used in less rigid setups, such as a hand-held drill.

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

				Shank			Standard Point
Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	For Use On	Point Angle		Each
Metric
Uncoated Carbide-Tipped Steel
5.0 mm	0.1968"	60mm	15mm	Round	5mm	Steel, Iron, Titanium, Aluminum, Brass, Bronze, Plastic	118°	000000000	000000

Cobalt Steel Hole-Starting Drill Bits

90° Point Angle

120° Point Angle

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. Cobalt steel bits are heat resistant and maintain their sharp edges when drilling hard material. They are for use in both hand-held drilling and machine-tool applications.

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°.

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

				Shank				90° Point Angle		120° Point Angle
Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style	For Use On		Each		Each
Metric
Uncoated Cobalt Steel
5.0 mm	0.1968"	60mm	15mm	Round	5mm	Standard	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel	00000000	000000	00000000	000000