2.8mm Shank Size Drill Bits

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8 Products

Drill Bit Decimal Size Equivalents

About Drill Bits

Black Oxide

Black and Gold Oxide

Standard

Split

These jobbers'-length bits have the rigidity and length required for most applications.

Black-oxide and black-and-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
Black-Oxide High-Speed Steel
2.8 mm	0.1102"	61mm	27.4mm	Round	2.8mm	Standard	DIN 338	Steel, Iron, Stainless Steel	0000000	00000
Black-and-Gold Oxide High-Speed Steel
2.8 mm	0.1102"	67mm	37.3mm	Round	2.8mm	Split	NAS907 Type B	Steel, Iron, Stainless Steel	000000000	0000

Short-Length Drill Bits

Black Oxide

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.

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
2.8 mm	0.1102"	46mm	7mm	Round	2.8mm	Standard	DIN 1897	Steel, Iron, Stainless Steel	00000000	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.

				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
2.8 mm	0.1102"	100mm	66mm	Round	2.8mm	Standard	Steel, Iron	DIN 340	000000000	00000

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.

				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
2.8 mm	0.1102"	61mm	33mm	Round	2.8mm	Split	DIN 338, NAS907 Type J	Steel, Hardened Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass	0000000	00000
Titanium-Aluminum-Nitride (TiAlN) Coated Cobalt Steel
2.8 mm	0.1102"	61mm	33mm	Round	2.8mm	Split	DIN 338, NAS907 Type J	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel, Titanium, Fiberglass	00000000	00000
Gold-Oxide Cobalt Steel
2.8 mm	0.1102"	61mm	27.4mm	Round	2.8mm	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.

				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
2.8 mm	0.1102"	61mm	33mm	Round	2.8mm	Split	DIN 338	Steel, Hardened Steel, Tool Steel, Iron, Stainless Steel, Nickel	00000000	00000