10.2mm Shank Size Drill Bits

Extended Length—Drill through panels and thick workpieces with our longest bits. Their length is good for creating deep holes but makes them less rigid than other bits. As a result, they are more prone to wobbling or breaking, especially when drilling hard materials.

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.

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		Each	Pkg. Qty.		Pkg.
Jobbers' Length







				Black Oxide

				10.2	0.4016"	133	66.6	Round	10.2 mm	Standard	00000000	000000	—	———	0




						Titanium Nitride (TiN) Coated

						10.2	0.4016"	133	66.6	Round	10.2 mm	Standard	0000000	00000	—	———	0




								Gold Oxide

								10.2	0.4016"	133	92.1	Round	10.2 mm	Split	000000000	00000	5	000000000	000000


								Short Length







												Black Oxide

												10.2	0.4016"	89	43	Round	10.2 mm	Split	000000000	0000	—	———	0




														Titanium Nitride (TiN) Coated

														10.2	0.4016"	89	43.2	Round	10.2 mm	Split	0000000	00000	—	———	0


														Extended Length







																		Black Oxide

																		10.2	0.4016"	184	121	Round	10.2 mm	Standard	000000000	00000	—	———	0

Cobalt Steel Drill Bits


Jobbers' Length Round Shank	Short 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.

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.

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		Each
Jobbers' Length







				Titanium Nitride (TiN) Coated

				10.2	0.4016"	133	87.1	Round	10.2 mm	Split	0000000	000000




						Titanium Aluminum Nitride (TiAlN) Coated

						10.2	0.4016"	133	87	Round	10.2 mm	Split	00000000	00000




								Gold Oxide

								10.2	0.4016"	133	66.6	Round	10.2 mm	Split	000000000	00000


								Short Length







												Uncoated

												10.2	0.4016"	89	22.6	Round	10.2 mm	Split	00000000	00000

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		Each
Jobbers' Length







				Uncoated

				10.2	0.4016"	133	87	Parabolic	Round	10.2	Split	0000000	000000