1.6mm 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.

Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated and oxide-coated bits, especially on tough materials like hardened steel and nickel.

Uncoated—The most economical option, uncoated bits perform best when used on low-carbon steel and aluminum. Polished to reduce friction, they're also known as bright finish 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				Each		Package
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Type	Size	Drill Bit Point Type	Mfr.		Each	Pkg. Qty.		Pkg.
Jobbers' Length







				Black Oxide

				1.55	0.061"	43	16.9	Round	1.6 mm	Standard	Dormer Pramet	2958A22	00000	—	———	0


				1.6	0.063"	43	16.8	Round	1.6 mm	Standard	Dormer Pramet	2958A38	0000	—	———	0




						Titanium Nitride (TiN) Coated

						1.6	0.063"	43	16.8	Round	1.6 mm	Standard	Dormer Pramet	8950A36	0000	—	———	0




								Uncoated

								1.6	0.063"	48	22.2	Round	1.6 mm	Standard	Viking Norseman Drill	2951A121	0000	—	———	0




										Black/Gold Oxide

										1.55	0.061"	48	19	Round	1.6 mm	Standard	Viking Norseman Drill	30565A223	0000	—	———	0


										1.6	0.063"	48	19	Round	1.6 mm	Standard	Viking Norseman Drill	30565A224	0000	10	30565A415	000000


										Short Length







														Black Oxide

														1.6	0.063"	34	4	Round	1.6 mm	Standard	Dormer Pramet	28255A74	0000	—	———	0




																Uncoated

																1.6	0.063"	33	9.9	Round	1.6 mm	Standard	Dormer Pramet	2979N13	0000	—	———	0

Cobalt Steel Drill Bits


Jobbers' Length Round Shank	Short Length Round Shank

Split

Standard

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.

Short Length—The most rigid bits for drilling the straightest holes.

Titanium Nitride (TiN) Coated—Drill at higher speeds and last longer than uncoated and oxide-coated bits, especially on tough materials like hardened steel and nickel.

Titanium Aluminum Nitride (TiAlN) Coated—The hardest and most wear-resistant coating, especially at high temperatures. These bits are best for hard and abrasive materials, such as iron, titanium, and fiberglass.

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.

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	Type	Size	Drill Bit Point Type	Mfr.		Each
Jobbers' Length







				Titanium Nitride (TiN) Coated

				1.55	0.061"	43	20	Round	1.6 mm	Standard	Chicago-Latrobe	5058N15	00000


				1.6	0.063"	43	20.1	Round	1.6 mm	Split	Dormer Pramet	5058N53	0000




						Titanium Aluminum Nitride (TiAlN) Coated

						1.55	0.061"	43	20	Round	1.6 mm	Split	Chicago-Latrobe	2753A216	00000




								Gold Oxide

								1.55	0.061"	43	16.9	Round	1.6 mm	Split	Dormer Pramet	29355A23	0000


								1.6	0.063"	43	16.8	Round	1.6 mm	Split	Dormer Pramet	29355A24	0000


								Short Length







												Titanium Nitride (TiN) Coated

												1.6	0.063"	33	6.9	Round	1.6 mm	Split	Chicago-Latrobe	2456N141	0000




														Uncoated

														1.6	0.063"	33	6.9	Round	1.6 mm	Split	Chicago-Latrobe	2456N113	0000

Carbide Drill Bits

Jobbers' Length

Round Shank

The hardest and most wear-resistant drill bits you can buy. Carbide bits stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so these bits require a rigid machine tool holder to prevent breakage and should not be used in hand drilling applications.

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

Uncoated—Excellent for a range of materials but won't last as long as coated bits.

					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







				Uncoated

				1.6	0.063"	43	20	Round	1.6 mm	Four Facet	Guhring	3030A14	000000

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

				1.6	0.063"	48	20	Parabolic	Round	1.6	Split	Viking Norseman Drill	2771N42	00000

Left-Hand High-Speed Steel Drill Bits

Jobbers' Length

Round Shank

Standard

With flutes that spiral in the opposite direction of other bits, these are primarily used to remove stripped screws. Choose a bit that’s slightly smaller than the diameter of the screw’s head. Set your power tool to rotate in reverse. Slowly drill in the center of the screw head, maintaining constant pressure. As the bit penetrates, it will catch onto the screw and reverse it out of the hole. If the screw is badly stripped, you might need to punch a starter hole. Also known as reverse-flute bits. High-speed steel is the versatile choice for drilling most metals.

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

Uncoated—The most economical option, uncoated bits perform best when used on low-carbon steel and aluminum. Polished to reduce friction, they're also known as bright finish bits.

					Shank					Each
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Type	Size	Drill Bit Point Type	Mfr.		1-9	10-Up
Jobbers' Length







				Uncoated

				1.6	0.063"	43	15.2	Round	1.6 mm	Standard	Dormer Pramet	29855A34	000000	000000

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

				2.0000 mm	High-Speed Steel	1.6	25	50	4	Left Hand	0.004 to 0.008	DIN 206	Aluminum, Brass, Bronze, Iron, Plastic, Stainless Steel, Steel	Dormer Pramet	2822A31	0000000