McMaster-Carr

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	System of Measurement System of Measurement

Wire Gauge

Letter

Inch

Metric

	Size Size

	Decimal Size Equivalent Decimal Size Equivalent

	Finish Finish

Black Oxide

Uncoated

Titanium Nitride (TiN)
Coated

Titanium Aluminum Nitride
(TiAlN) Coated

	Material Material

High-Speed Steel

Cobalt Steel

Carbide

	For Use On For Use On

	Bit Style Bit Style

	Spiral Flute
	Parabolic Spiral Flute

	Individual/Set Individual/Set

Individual

Set

	Shank Size Shank Size

	Point Angle Point Angle

	Point Style Point Style

	Flute Direction Flute Direction

Right Hand

Left Hand

	Maximum Drilling Depth Maximum Drilling Depth

	Overall Length Overall Length

	Number of Pieces Number of Pieces

114

115

249

	Container Type Container Type

Metal Case

Metal Drawer Cabinet

	Specifications Met Specifications Met

NAS

DIN

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About Drill Bits

Drill Bit Decimal Size Equivalents

Drill Bits

These jobbers'-length bits have the rigidity and length required for most applications.

Chip-Clearing Drill Bits

These jobbers'-length bits have the rigidity and length required for most applications.

Cobalt Steel Drill Bits

Short-Flute Cobalt Steel Drill Bits

The short flutes on these jobbers'-length bits provide increased rigidity for drilling straighter holes.

Chip-Clearing Cobalt Steel Drill Bits

The parabolic spiral flutes lift chips out of the hole, reducing clogging and improving coolant flow.

Carbide Drill Bits

These jobbers'-length bits have the rigidity and length required for most applications.

Smooth-Finish Carbide Drill Bits

Three cutting edges instead of the typical two enable these bits to drill holes with a smoother finish than other bits.

Chip-Clearing Carbide Drill Bits

The parabolic spiral flutes lift chips out of the hole, reducing clogging and improving coolant flow.

Carbide-Tipped Drill Bits

These jobbers'-length bits have the rigidity and length required for most applications.

Drill Bits for Aluminum,
Brass, and Bronze

Because softer metal, like aluminum, brass, and bronze, can clog a bit, the flutes on these bits lift chips out of the hole. Also known as slow-spiral drill bits.

Drill Bits for Plastic

The sharp point allows for gradual penetration to reduce friction and eliminate cracking and chipping when drilling in plastic.

Drill Bits for Carbon Fiber,
Fiberglass, and Graphite

These jobbers'-length bits have the rigidity and length required for most applications.

High-Speed Steel Left-Hand Drill Bits

Use for drilling in most metal.

Drill Bit Sets

These jobbers'-length bits have the rigidity and length required for most applications.

Cobalt Steel Drill Bit Sets

Carbide Drill Bit Sets

For the highest accuracy and longest tool life, these solid-carbide bits are harder, stronger, and more wear resistant than high-speed steel, cobalt steel, and carbide-tipped bits.

Left-Hand Drill Bit Sets

Also known as reverse-flute bits, the flutes spiral in the opposite direction of other bits. Use in counterclockwise drilling applications such as removing broken screws.

About Drill Bits