169mm Long Drill Bits | McMaster-Carr

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.

					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

				14.5	0.5709"	169	85	Round	14.5 mm	Standard	Dormer Pramet	2958A174	000000


				15.0	0.5906"	169	84	Round	15 mm	Standard	Dormer Pramet	2958A175	00000




						Titanium Nitride (TiN) Coated

						14.5	0.5709"	169	85	Round	14.5 mm	Standard	Dormer Pramet	8950A69	00000


						15.0	0.5906"	169	84	Round	15 mm	Standard	Dormer Pramet	8950A71	00000

High-Speed Steel Drill Bits for Plastic

The precision-ground, 60° point penetrates gradually to prevent cracking and chipping. It also reduces heat that can deform the material. Use these bits for drilling into acrylic, laminate, and other plastics. They're made of wear-resistant high-speed steel.

Jobbers' Length About Jobbers' Length

					Shank
	Drill Bit Size, mm	Decimal Size Equiv.	Overall Lg., mm	Max. Drilling Dp., mm	Type	Size, mm	Point Angle	Drill Bit Point Type	Mfr.		Each
Uncoated



		14.5	0.5709"	169	114	Round	14.5	60°	Standard	ICS	27465A436	000000


		15	0.5906"	169	114	Round	15	60°	Standard	ICS	27465A437	00000

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.

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.

					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 Aluminum Nitride (TiAlN) Coated

				14.5	0.5709"	169	92.3	Round	14.5 mm	Split	Guhring	2753A185	0000000

Chip-Clearing High-Speed Steel Drill Bits

Jobbers' Length

Parabolic Flute

Round Shank

Split

With flutes that lift chips out of the hole, you don't have to stop drilling to clear these bits manually. They improve coolant flow to dissipate heat and prevent clogs that can damage the bit and ruin the hole. High-speed steel is good for general purpose drilling in most metals.

Parabolic Flute—A U-shaped groove on the flutes cuts faster and clears chips more quickly than high-helix bits, so these are better for drilling deeper holes.

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
	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

				14.5	0.5709"	169	114	Parabolic	Round	14.5	Split	Dormer Pramet	2754A91	000000


				15.0	0.5906"	169	114	Parabolic	Round	15	Split	Dormer Pramet	2754A92	00000