33mm Long Drill Bits | McMaster-Carr

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.

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

				1.0	0.0394"	33	11.9	Round	1 mm	Split	5058N51	00000


				Short Length







								Titanium Nitride (TiN) Coated

								1.5	0.0591"	33	6.1	Round	1.5 mm	Split	2456N139	0000


								1.6	0.063"	33	6.9	Round	1.6 mm	Split	2456N141	0000




										Uncoated

										1.6	0.063"	33	6.9	Round	1.6 mm	Split	2456N113	0000

High-Speed Steel Drill Bits

Short Length

Round Shank

Standard

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

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

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	Type	Size	Drill Bit Point Type		Each
Short Length







				Uncoated

				1.6	0.063"	33	9.9	Round	1.6 mm	Standard	2979N13	00000