6.2mm Shank Size Drill Bits

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

				6.2	0.2441"	101	50.6	Round	6.2 mm	Standard	Dormer Pramet	2958A96	00000




						Black/Gold Oxide

						6.2	0.2441"	102	66.7	Round	6.2 mm	Split	Viking Norseman Drill	30565A285	0000


						Short Length







										Black Oxide

										6.2	0.2441"	70	31	Round	6.2 mm	Split	Dormer Pramet	28255A116	0000

Cobalt Steel Drill Bits

Jobbers' Length

Round Shank

Split

Tough and wear resistant, cobalt steel bits last at least twice as long as high-speed steel. They can also run up to 25% faster at higher temperatures without being damaged on hard materials, such as nickel.

Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.

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







				Titanium Nitride (TiN) Coated

				6.2	0.2441"	101	63	Round	6.2 mm	Split	Dormer Pramet	5058N134	000000




						Gold Oxide

						6.2	0.2441"	101	50.6	Round	6.2 mm	Split	Dormer Pramet	29355A94	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

				6.2	0.2441"	101	61	Parabolic	Round	6.2	Split	Viking Norseman Drill	2771N764	00000

Reamers

Finish holes to precise inch, metric, wire gauge, or letter sizes with these reamers.

Square Shank

Spiral Flute

Turn these reamers by hand with an adjustable wrench or straight-handle tap wrench (sold separately).

Spiral Flute—Since these reamers clear chips better than straight flutes, they leave holes with a smoother finish. They're better for holes with breaks in the surface, such as a keyway, because they cut continuously across the breaks instead of moving in and out.

High-Speed Steel—Durable and wear resistant, these are good for general purpose reaming in most materials.

Left-Hand Spiral—These reamers push chips downward as they cut, so they're often used in through holes.

				Lg., mm
	Reamer Dia.	Material	Square Shank Size, mm	Flute	Overall	No. of Flutes	Spiral Direction	Cutting Dia. Tolerance, mm	Specs. Met	For Use On	Mfr.		Each
Spiral Flute







				Metric

				8.0000 mm	High-Speed Steel	6.2	58	115	6	Left Hand	0.006 to 0.012	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Dormer Pramet	2822A44	0000000