4.6mm Shank Size Drill Bits | McMaster-Carr

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Length Class

Decimal Size Equivalent

For Use On

Stainless Steel

Material

High-Speed Steel

Drill Bit Point Type

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Black/Gold Oxide

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Maximum Drilling Depth

Flute Type

Shank Type

Overall Length

DFARS Specialty Metals

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Manufacturer

Viking Norseman Drill

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Length

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Shank Size

0.005" to 0.04"

0.008" to 1/16"

0.012" to 0.015"

0.012" to 5/32"

0.012" to 0.291"

0.014" to 0.039"

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0.4 mm to 10 mm

0.5 mm to 6.5 mm

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0.5 mm to 13 mm

0.5 mm to 16 mm

0.5 mm to 19 mm

0.6 mm to 7.3 mm

0.6 mm to 7.4 mm

0.7 mm to 6.5 mm

0.8 mm to 10 mm

1.1 mm to 13 mm

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1.5 mm to 13 mm

1.6 mm to 12.7 mm

1.6 mm to 13 mm

1.6 mm to 16 mm

2.5 mm to 10 mm

2.5 mm to 13 mm

2.5 mm to 16 mm

4.5 mm to 19 mm

5 mm to 20.3 mm

5.2 mm to 25.4 mm

6.4 mm to 9.5 mm

10 mm to 25.4 mm

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4 Products

About Drill Bits

Compare material, finish, length class, and decimal size equivalents.

Material

High-Speed Steel

High-Speed Steel

Versatile bits resist heat and wear to stay sharp

Cobalt Steel

Resist higher temperatures and last twice as long as high-speed steel

Performance

Chip Clearing

Prevent clogs and dissipate heat

Length Class

Jobbers

The rigidity and length needed for most applications

High-Speed Steel Drill Bits

Jobbers' Length

Round Shank

Short Length

Round Shank


Standard	Split

Our basic drill bits are also the most versatile. Cut holes in a variety of metals, from the softest aluminum to the hardest steel.

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.

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.

Black/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.

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







				Black Oxide

				4.6	0.1811"	80	37.8	Round	4.6 mm	Standard	Dormer Pramet	2958A78	00000




						Black/Gold Oxide

						4.6	0.1811"	86	50.8	Round	4.6 mm	Split	Viking Norseman Drill	30565A267	0000


						Short Length







										Black Oxide

										4.6	0.1811"	58	11.5	Round	4.6 mm	Split	Dormer Pramet	28255A89	0000

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.

Uncoated—Polished to eject chips, these are also known as bright finish bits.

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







				Uncoated

				4.6	0.1811"	80	45	Parabolic	Round	4.6	Split	Viking Norseman Drill	2771N748	00000

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