18 Piece Drill Bit Set | McMaster-Carr

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	Flute Type Flute Type

	Straight
	Spiral Point

	For Use On For Use On

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Thread Type Thread Type

UNC

Metric

UNF

	Component Component

Tap

Drill Bit

	Shank Type Shank Type


Round	Square

	Number of Flutes Number of Flutes

	2		3
	4

	Material Material

Cobalt Steel

High-Speed Steel

	Drill Bit Finish Drill Bit Finish

Uncoated

Black Oxide

Gold Oxide

Titanium Nitride (TiN) Coated

Black and Gold Oxide

	Drill Bit Material Drill Bit Material

High-Speed Steel

Cobalt Steel

	Maximum Tapping Depth Maximum Tapping Depth

	Thread Length Thread Length

	Finish Finish

Black Oxide

Gold Oxide

Titanium Nitride (TiN) Coated

Uncoated

	Overall Length Overall Length

	Individual/Set Individual/Set

Set

	Thread Pitch Thread Pitch

	Pitch Diameter Limit Pitch Diameter Limit

	Chamfer Type Chamfer Type

Plug

	Application Application

Through-Hole Threading

Closed-End Hole Threading

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Number of Pieces Number of Pieces	Show

	Number of Pieces Number of Pieces	Hide

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9 Products

Tap and Drill Bit Sets

Set with Metal Case

Drill and tap a variety of hole sizes. These taps and drill bits are for use on metal and plastic.

High-speed steel taps and drill bits have a longer tool life than carbon steel. Uncoated high-speed steel taps and drill bits are strong enough for most jobs but don’t last as long as other high-speed steel taps and drill bits. Use them for small-scale jobs. Titanium-nitride (TiN) coated taps resist heat and wear better than uncoated taps, letting them last up to twice as long. Titanium-nitride (TiN) coated drill bits last longer and can drill at higher speeds than uncoated and oxide-coated drill bits. Black-oxide coated and black-and-gold-oxide coated taps and drill bits cut with less friction than uncoated taps and drill bits.

Cobalt steel taps and drill bits have higher strength and wear resistance than carbon steel and high-speed steel taps and drill bits.

Plug-chamfer taps are a versatile choice for most tapping applications. With 3-5 chamfered cutting threads, they require moderate torque and are often used for start-to-finish tapping of through holes and closed-end holes. However, they do not start threads as easily as taper chamfers. When using them to tap closed-end holes, be sure to leave sufficient space at the bottom for chips to accumulate.

Uncoated High-Speed Steel Taps
No. of Pieces	Chamfer Type	Tap Sizes Included	No. of Flutes	Drill Bit Sizes Included	Drill Bit Material	Container Type		Each
18	Plug	1 each of sizes: 6-32 8-32 10-24 10-32 1/4"-20 5/16"-18 3/8"-16 7/16"-14 1/2"-13	3, 4	27/64" 5/16" 36 ga 29 ga. 25 ga. 21 ga. 7 ga. F U	Uncoated High-Speed Steel	Metal Case	0000000	0000000
18	Plug	1 each of sizes: 6-40 8-36 10-24 10-32 1/4"-28 5/16"-24 3/8"-24 7/16"-20 1/2"-20	3, 4	25/64" 29/64" 33 ga. 29 ga. 25 ga. 21 ga. 3 ga. I Q	Uncoated High-Speed Steel	Metal Case	0000000	000000
18	Plug	1 each of sizes: M2.5 × 0.45 mm M3 × 0.50 mm M3.5 × 0.60 mm M4 × 0.70 mm M5 × 0.80 mm M6 × 1.00 mm M8 × 1.25 mm M10 × 1.50 mm M12 × 1.75 mm	3, 4	2.05 mm 2.5 mm 2.9 mm 3.3 mm 4.2 mm 5.0 mm 6.7 mm 8.5 mm 10.2 mm	Uncoated High-Speed Steel	Metal Case	00000000	000000
Uncoated Cobalt Steel Taps
18	Plug	1 each of sizes: 6-32 8-32 10-24 10-32 1/4"-20 5/16"-18 3/8"-16 7/16"-14 1/2"-13	2, 3	27/64" 5/16" 36 ga 29 ga. 25 ga. 21 ga. 7 ga. F U	Uncoated Cobalt Steel	Metal Case	0000000	000000
Black Oxide High-Speed Steel Taps
18	Plug	1 each of sizes: 6-32 8-32 10-24 10-32 1/4"-20 5/16"-18 3/8"-16 7/16"-14 1/2"-13	3, 4	27/64" 5/16" 36 ga 29 ga. 25 ga. 21 ga. 7 ga. F U	Black and Gold Oxide High-Speed Steel	Metal Case	00000000	000000
Titanium Nitride (TiN) Coated High-Speed Steel Taps
18	Plug	1 each of sizes: 6-32 8-32 10-24 10-32 1/4"-20 5/16"-18 3/8"-16 7/16"-14 1/2"-13	3, 4	27/64" 5/16" 36 ga 29 ga. 25 ga. 21 ga. 7 ga. F U	Titanium Nitride (TiN) Coated High-Speed Steel	Metal Case	00000000	000000

Chip-Clearing Tap and Drill Bit Sets for Through-Holes

Also known as gun taps, the taps in these sets have spiral-point flutes that push chips ahead of the tap and out of through holes. Because they don't need to be reversed to prevent buildup, they produce threads more efficiently than standard taps and are suitable for production work. Taps have a square shank for compatibility with tap wrenches and tap holders for drill presses and milling machines. With a plug chamfer, they have 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping. All taps and drill bits are made of high-speed steel for use on most metal and plastic.

Uncoated High-Speed Steel
No. of Pieces	Chamfer Type	Tap Sizes Included	Thread Type	No. of Flutes	Pitch Dia. Limit	Drill Bit Sizes Included	Drill Bit Material	Container Type		Each
18	Plug	6-32 8-32 10-24 10-32 1/4"-20 5/16"-18 3/8"-16 7/16"-14 1/2"-13	UNC, UNF	2, 3	H3	27/64" 5/16" 36 ga. 29 ga. 25 ga. 21 ga. 7 ga. F U	Black Oxide High-Speed Steel	Metal Case	00000000	0000000
Gold Oxide High-Speed Steel
18	Plug	6-40 8-36 10-24 10-32 1/4"-28 5/16"-24 3/8"-24 7/16"-20 1/2"-20	UNF	2, 3	H2, H3	29/64" 25/64" 33 ga. 29 ga. 25 ga. 21 ga. 3 ga. I Q	Gold Oxide High-Speed Steel	Metal Case	00000000	000000
18	Plug	M2.5 × 0.45 mm M3 × 0.5 mm M3.5 × 0.6 mm M4 × 0.7 mm M5 × 0.8 mm M6 × 1.00 mm M8 × 1.25 mm M10 × 1.5 mm M12 × 1.75 mm	Metric	2, 3	D3, D4, D5, D6	2.05 mm 2.5 mm 2.9 mm 3.3 mm 4.2 mm 5 mm 6.7 mm 8.5 mm 10.2 mm	Gold Oxide High-Speed Steel	Metal Case	00000000	000000