100mm Drill Bits | McMaster-Carr

				Shank
Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style	For Use On	Specifications Met		Each
Metric
Black-Oxide High-Speed Steel
2.8 mm	0.1102"	100mm	66mm	Round	2.8mm	Standard	Steel, Iron	DIN 340	000000000	00000
Uncoated High-Speed Steel
3.0 mm	0.1181"	100mm	59.8mm	Round	3mm	Standard	Steel, Iron, Aluminum, Brass, Bronze, Plastic	__	00000000	0000

Nonsparking Drill Bits

Drill safely in flammable environments. Made of Factory Mutual (FM) approved beryllium copper, these bits won’t create sparks that could ignite if they made contact with combustible vapors or residues. These drill bits help you meet OSHA requirements in areas such as mines, refineries, and chemical plants where flammable materials are present.

Do not use these bits in direct contact with acetylene. Dust from beryllium copper can be toxic, so don't grind or sharpen them.

				Shank
Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style	Specifications Met	For Use On		Each
Metric
Uncoated Beryllium Copper
1.0 mm	0.0394"	100mm	20mm	Round	1mm	Standard	FM Approved	Aluminum, Copper, Brass, Fiberglass, Plastic	00000000	0000000
2.0 mm	0.0787"	100mm	25mm	Round	2mm	Standard	FM Approved	Aluminum, Copper, Brass, Fiberglass, Plastic	00000000	000000
2.5 mm	0.0984"	100mm	25mm	Round	2.5mm	Standard	FM Approved	Aluminum, Copper, Brass, Fiberglass, Plastic	00000000	000000
3.0 mm	0.1181"	100mm	25mm	Round	3mm	Standard	FM Approved	Aluminum, Copper, Brass, Fiberglass, Plastic	00000000	000000
4.0 mm	0.1575"	100mm	30mm	Round	4mm	Standard	FM Approved	Aluminum, Copper, Brass, Fiberglass, Plastic	00000000	000000
5.0 mm	0.1968"	100mm	30mm	Round	5mm	Standard	FM Approved	Aluminum, Copper, Brass, Fiberglass, Plastic	00000000	000000
6.0 mm	0.2362"	100mm	40mm	Round	6mm	Standard	FM Approved	Aluminum, Copper, Brass, Fiberglass, Plastic	00000000	000000

Drill Bits for Precise Holes in Wood

Uncoated High-Speed Steel

Three sharp points allow these bits to drill accurate straight and overlapping holes, even across the grain. The center guide point prevents the bit from wandering. Also known as brad-point bits.

High-speed steel drill bits are stronger and more wear resistant than steel drill bits.

For technical drawings and 3-D models, click on a part number.

				Shank
Size	Decimal Size Equivalent	Overall Lg.	Max. Drilling Dp.	Type	Size	Point Style		Each
Metric
Uncoated High-Speed Steel
6.0 mm	0.2362"	100mm	75mm	Round	6mm	Brad	00000000	000000

Drill Bit Decimal Size Equivalents

About Drill Bits

Extended-Length Drill Bits

Nonsparking Drill Bits

Drill Bits for Precise Holes in Wood