10.2 mm 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
10.2 mm	0.4016"	133mm	66.6mm	Round	10.2mm	Standard	DIN 338	Steel, Iron, Stainless Steel	00000000	000000	__	000000	00
Black-and-Gold Oxide High-Speed Steel
10.2 mm	0.4016"	133mm	92.1mm	Round	10.2mm	Split	NAS907 Type B	Steel, Iron, Stainless Steel	000000000	00000	5	000000000	000000
Titanium-Nitride (TiN) Coated High-Speed Steel
10.2 mm	0.4016"	133mm	66.6mm	Round	10.2mm	Standard	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic	0000000	00000	__	000000	00

Short-Length Drill Bits

Black Oxide

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.

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					Each
Drill Bit Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style	Specifications Met	For Use On		Each
Metric
Black-Oxide High-Speed Steel
10.2 mm	0.4016"	89mm	43mm	Round	10.2mm	Split	DIN 1897	Steel, Iron, Stainless Steel	000000000	00000
Titanium-Nitride (TiN) Coated High-Speed Steel
10.2 mm	0.4016"	89mm	43.2mm	Round	10.2mm	Split	DIN 1897	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Aluminum, Brass, Bronze, Plastic	0000000	00000

Extended-Length Drill Bits

Black Oxide

Access hard-to-reach spots and drill deep holes.

Black-oxide drill bits produce less friction 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	Specifications Met		Each
Metric
Black-Oxide High-Speed Steel
10.2 mm	0.4016"	184mm	121mm	Round	10.2mm	Standard	Steel, Iron	DIN 340	000000000	000000

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
10.2 mm	0.4016"	133mm	87.1mm	Round	10.2mm	Split	DIN 338	Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass	0000000	000000
Titanium-Aluminum-Nitride (TiAlN) Coated Cobalt Steel
10.2 mm	0.4016"	133mm	87mm	Round	10.2mm	Split	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass	00000000	00000
Gold-Oxide Cobalt Steel
10.2 mm	0.4016"	133mm	66.6mm	Round	10.2mm	Split	NAS907 Type J	Steel, Hardened Steel, Iron, Stainless Steel, Nickel	000000000	00000

Short-Length Cobalt Steel Drill Bits

Uncoated

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.

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
Uncoated Cobalt Steel
10.2 mm	0.4016"	89mm	22.6mm	Round	10.2mm	Split	DIN 1897	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel	00000000	000000

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
10.2 mm	0.4016"	133mm	87mm	Round	10.2mm	Split	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel	0000000	000000

High-Speed Steel Morse Taper-Shank Drill Bits

Install the Morse taper shank directly into the tapered spindle on machines such as drill presses and lathes.

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

		Morse Taper
Drill Bit Size	Decimal Size Equivalent	No.	Dia.	Overall Lg.	Max. Drilling Dp.	Shank Type	Point Style	Specifications Met	For Use On		Each
Metric
Black-Oxide High-Speed Steel
10.2 mm	0.4016"	1	0.475"	168mm	66.5mm	Morse Taper	Standard	DIN 345	Steel, Iron, Stainless Steel	00000000	000000

Drill Bit Drawer Cabinets

Store multiple bits of each size. These cabinets have drawers marked with the sizes and decimal equivalents. They can be stacked up to three high.

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

Number of		For Drill Bit		Overall
Compartments	Drawers	Size	Lg. Class	Lg.	Wd.	Ht.	Includes	Material	Features		Each
For Metric Drill Bits
138	4	0.35-2.5 mm (increments of 0.05 mm) 2.6-10.0 mm (increments of 0.1 mm) 10.2 mm 10.5 mm 10.8 mm 11.0 mm 11.2 mm 11.5 mm 11.8 mm 12.0 mm 12.2 mm 12.5 mm 13.0 mm	Jobbers' Length, Short Length	26"	12"	12 1/2"	Two Keys	Steel	Built-In Lock, Undivided bottom drawer for general storage	0000000	0000000

Hex Shank Combination Drill Bits/Taps for Drills and Screwdrivers

With a drill bit point to drive into the workpiece, these taps can drill and tap holes in a single step. A 1/4" hex shank connects them directly to tools such as drills and power screwdrivers. They're made of high-speed steel and are for use on most metal and plastic.

Their spiral flutes keep chips clear by drawing them back toward the tap and out of the hole. All have a plug chamfer with 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping.

Uncoated taps are strong enough for most tapping jobs but have the shortest tool life. Titanium Nitride (TiN) coated taps resist heat and wear better than uncoated taps, letting them last up to twice as long.

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

Metric

Thread				Drill Bit						Plug Chamfer
Size	Pitch, mm	Lg.	Overall Lg.	Size	Decimal Size Equivalent	Point Angle	No. of Flutes	Pitch Dia. Limit	Hex Shank Size		Each
Uncoated High-Speed Steel
M12	1.75	1 3/8"	5 1/16"	10.2 mm	0.4015"	118°	2	D6	1/4"	0000000	000000
Titanium Nitride (TiN) Coated High-Speed Steel
M12	1.75	1 3/8"	5 1/16"	10.2 mm	0.4015"	118°	2	D6	1/4"	00000000	00000

Combination Drill Bit/Taps

Spiral Flute

Drill holes and cut threads without switching tools. Made of high-speed steel, these taps are for use on most metal and plastic. The square shank is compatible with tap holders for drill presses and milling machines. All have a plug chamfer with 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping.

Taps with spiral flutes keep chips clear by drawing them back toward the tap and out of the hole.

Uncoated taps are strong enough for most tapping jobs but have a shorter tool life.

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

Metric

Thread				Drill Bit					Plug Chamfer
Size	Pitch, mm	Lg.	Overall Lg.	Size	Decimal Size Equivalent	Point Angle	Flute Type	Pitch Dia. Limit		Each
Uncoated High-Speed Steel
M12	1.75	1 3/8"	4 1/16"	10.2 mm	0.4015"	110°	Spiral	D6	0000000	000000

Hardened Undersized High-Speed M2 Tool Steel Rods

Yield Strength: Not Rated
Hardness: Rockwell C60 (Very Hard)

These rods, also known as drill blanks, have an undersized diameter for machining your own jobbers'-length drill bits. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.

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

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Dia.	Dia. Tolerance	Drill Bit Size	Lg.	Mechanical Finish	Straightness Tolerance		Each
10.2mm	-0.0050mm to 0.0000mm	10.2 mm	5 1/4"	Precision Ground	0.012" per ft.	00000000	000000