Tap and Drill Sets | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Thread Type Thread Type

	Thread Pitch Thread Pitch

	For Use On For Use On

	Number of Drill Bits Number of Drill Bits

	Component Component

Tap

Drill Bit

Die

	Number of Pieces Number of Pieces

117

	Flute Type Flute Type

	Straight
	Spiral Point
	Spiral

	Drill Bit Material Drill Bit Material

High-Speed Steel

Steel

Cobalt Steel

	Chamfer Type Chamfer Type

Plug

Taper

Bottoming

	Shank Type Shank Type


Square	Round

Hex

	Number of Taps Number of Taps

	Individual/Set Individual/Set

Set

Individual

	Material Material

High-Speed Steel

Steel

Cobalt Steel

	Container Type Container Type

	Application Application

Through-Hole Threading

Closed-End Hole Threading

	Drill Bit Finish Drill Bit Finish

Black Oxide

Uncoated

Gold Oxide

Titanium Nitride (TiN) Coated

Black and Gold Oxide

	Number of Flutes Number of Flutes

	Maximum Tapping Depth Maximum Tapping Depth

	Width Width

5/8"

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

RoHS Compliant

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

REACH Compliant

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91 Products

Tap and Drill Bit Sets

Set with Plastic Case

Set with Metal Case

Set with Plastic Pouch

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

Carbon steel taps are for thread repair and occasional tapping.

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.

Taper-chamfer taps have 7-10 chamfered threads at the tip for cutting into the workpiece. They require less torque than other chamfer types, making them a good choice for starting threads and tapping through holes. However, a longer taper means that they cannot thread as close to the bottom of closed-end holes.

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.

Bottoming-chamfer taps cut into the workpiece with just 1-2 chamfered threads. This short chamfer lets them thread holes closer to the bottom than other taps, but they require more torque to start threads.

Uncoated Carbon Steel Taps
No. of Pieces	Chamfer Type	Tap Sizes Included	No. of Flutes	Drill Bit Sizes Included	Drill Bit Material	Container Type	Includes		Each
13	Plug	1 each of sizes: 4-40 6-32 8-32 10-24 10-32 1/4"-20	3, 4	43 ga. 35 ga. 29 ga. 25 ga. 21 ga. 7 ga.	Black Oxide High-Speed Steel	Plastic Case	Tap Wrench	0000000	000000
29	Taper, Plug, Bottoming	3 each of sizes: M3 × 0.50 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	2.5 mm 3.3 mm 4.2 mm 5.0 mm 6.8 mm 8.5 mm 10.2 mm	Black Oxide High-Speed Steel	Metal Case	Tap Wrench	0000000	000000
Uncoated High-Speed Steel Taps
10	Plug	1 each of sizes: 1/4"-20 5/16"-18 3/8"-16 7/16"-14 1/2"-13	4	27/64" 5/16" 7 ga. F U	Black Oxide High-Speed Steel	Plastic Pouch	__	00000000	00000
16	Plug	1 each of sizes: 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	2.5 mm 2.9 mm 3.3 mm 4.2 mm 5.0 mm 6.75 mm 8.5 mm 10.25 mm	Black Oxide High-Speed Steel	Plastic Pouch	__	0000000	000000
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	000000
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
29	Taper, Plug, Bottoming	3 each of sizes: M3 × 0.50 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	2.5 mm 3.3 mm 4.2 mm 5.0 mm 6.8 mm 8.5 mm 10.2 mm	Black Oxide High-Speed Steel	Metal Case	Tap Wrench	0000000	000000
36	Plug	1 each of sizes: 6-32 6-40 8-32 8-36 10-24 10-32 12-24 12-28 1/4"-20 1/4"-28 5/16"-18 5/16"-24 3/8"-24 3/8"-16 7/16"-14 7/16"-20 1/2"-13 1/2"-20	3, 4	1 each of sizes: 25/64" 27/64" 29/64" 5/16" 36 ga 33 ga. 25 ga. 21 ga. 16 ga. 15 ga. 7 ga. 3 ga. F I Q U 2 each of size 29 ga.	Black Oxide High-Speed Steel	Metal Case	__	0000000	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

Hex-Shank Combination Drill Bit/Tap Sets for Drills and Screwdrivers

Set with Fabric Pouch

Set with Plastic Case

Drill and tap holes in a range of diameters. With a drill bit point to drive into the workpiece, these tools can drill and tap holes in a single step. Connect them directly to drills, power screwdrivers, and other tools that accept a 1/4" hex shank. They're made of high-speed steel and are for use on most metal and plastic. Their spiral flutes keep chips clear by drawing them back toward the tap and out of the hole. Recommended for use in through holes, all have a plug chamfer with 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping.

Titanium nitride (TiN) coated taps last longer and can drill at higher speeds than uncoated taps.

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

Titanium Nitride (TiN) Coated High-Speed Steel
No. of Pieces	Chamfer Type	Tap Sizes Included	No. of Flutes	Drill Bit Sizes Included	Container Type	Includes		Each
7	Plug	6-32 8-32 10-24 1/4"-20 5/16"-18 3/8"-16	2	5/16" 36 ga. 29 ga. 25 ga. 7 ga. F	Fabric Pouch	Chuck	0000000	0000000
Uncoated High-Speed Steel
7	Plug	6-32 8-32 10-24 1/4"-20 5/16"-18 3/8"-16	2	5/16" 36 ga. 29 ga. 25 ga. 7 ga. F	Fabric Pouch	Chuck	0000000	000000
7	Plug	M3 × 0.5 mm M4 × 0.7 mm M5 × 0.8 mm M6 × 1.0 mm M8 × 1.25 mm M10 × 1.5 mm	2	3/32" 1/8" 11/64" 13/64" 17/64" 31/64"	Plastic Case	Chuck	0000000	000000

Hex-Shank Tap and Drill Bit Sets for Drills and Screwdrivers

All taps and drill bits have a hex shank for direct connection to tools such as drills and power screwdrivers. They're made of high-speed steel and are for use on most metal and plastic. Taps have a plug chamfer with 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping, but they’ll need space at the bottom of closed-end holes for chips to accumulate.

Uncoated High-Speed Steel
No. of Pieces	Chamfer Type	Tap Sizes Included	Overall Lg.	No. of Flutes	Drill Bit Sizes Included	Drill Bit Material	Container Type	Includes		Each
13	Plug	M3 × 0.5 mm M4 × 0.7 mm M5 × 0.8 mm M6 × 1.0 mm M8 × 1.25 mm M10 × 1.5 mm	1 19/64" 1 27/64" 1 35/64" 1 37/64"	3, 4	2.5 mm 3.3 mm 4.2 mm 5.0 mm 6.8 mm 8.5 mm	Uncoated High-Speed Steel	Plastic Case	Chuck	0000000	0000000

Tap, Die, and Drill Bit Sets

Cut and repair threads and drill holes in many different sizes. Tap and die wrenches are included. The dies are hex shaped for use with conventional wrenches. The taps are made of carbon steel and are recommended for thread repair and occasional tapping.

Carbon Steel
No. of Pieces	Tap Sizes Included	Die Sizes Included	Drill Bit Sizes Included	Container Type	Includes		Each
Right-Hand Thread
117	4-40, 6-32, 8-32, 10-24, 10-32, 12-24, 1/8"-27, 1/8"-28, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, M3 × 0.50 mm, M4 × 0.70 mm, M4 × 0.75 mm, M5 × 0.80 mm, M5 × 0.90 mm, M6 × 1.00 mm, M7 × 1.00 mm, M8 × 1.00 mm, M8 × 1.25 mm, M9 × 1.00 mm, M9 × 1.25 mm, M10 × 1.25 mm, M10 × 1.50 mm, M11 × 1.50 mm, M12 × 1.50 mm, and M12 × 1.75 mm	4-40, 6-32, 8-32, 10-24, 10-32, 12-24, 1/8"-27, 1/8"-28, 1/4"-20, 1/4"-28, 5/16"-18, 5/16"-24, 3/8"-16, 3/8"-24, 7/16"-14, 7/16"-20, 1/2"-13, 1/2"-20, M3 × 0.50 mm, M4 × 0.70 mm, M4 × 0.75 mm, M5 × 0.80 mm, M5 × 0.90 mm, M6 × 1.00 mm, M7 × 1.00 mm, M8 × 1.00 mm, M8 × 1.25 mm, M9 × 1.00 mm, M9 × 1.25 mm, M10 × 1.25 mm, M10 × 1.50 mm, M11 × 1.50 mm, M12 × 1.50 mm, and M12 × 1.75 mm	5/64", 7/64", 5/32", 1/4", 19/64", 5/16", 21/64", 3/8", 25/64", 13/32", 27/64", 29/64", 43 ga., 39 ga., 36 ga., 30 ga., 29 ga., 25 ga., 21 ga., 20 ga., 16 ga., 9 ga., 7 ga., 3 ga., B, F, H, I, J, O, Q, R, S, U, and Z	Plastic Case	Die Wrench (2), Extractor (5), Tap Wrench (3), Thread Gauge (2)	00000000	0000000

Hex Shank Combination Drill Bits/Taps for Drills and Screwdrivers

With a drill bit point to drive into the workpiece, these taps can drill and tap holes in a single step. A 1/4" hex shank connects them directly to tools such as drills and power screwdrivers. They're made of high-speed steel and are for use on most metal and plastic.

Their spiral flutes keep chips clear by drawing them back toward the tap and out of the hole. All have a plug chamfer with 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping.

Uncoated taps are strong enough for most tapping jobs but have the shortest tool life. Titanium Nitride (TiN) coated taps resist heat and wear better than uncoated taps, letting them last up to twice as long.

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

Inch

Thread			Drill Bit							Plug Chamfer
Size	Lg.	Overall Lg.	Size	Decimal Size Equivalent	Point Angle	No. of Flutes	Thread Type	Pitch Dia. Limit	Hex Shank Size		Each
Uncoated High-Speed Steel
4-40	3/8"	2 7/8"	43 ga.	0.089"	118°	2	UNC	H2	1/4"	0000000	000000
5-40	5/16"	1 27/64"	7/64"	0.1024"	110°	2	UNC	Not Rated	1/4"	0000000	00000
6-32	7/16"	3"	36 ga.	0.1065"	118°	2	UNC	H3	1/4"	0000000	00000
8-32	1/2"	3 1/8"	29 ga.	0.136"	118°	2	UNC	H3	1/4"	0000000	00000
10-24	5/8"	3 3/8"	25 ga.	0.1495"	118°	2	UNC	H3	1/4"	0000000	00000
10-32	5/8"	3 3/8"	21 ga.	0.159"	118°	2	UNF	H3	1/4"	0000000	00000
12-24	1/2"	1 39/64"	11/64"	0.1772"	110°	2	UNC	Not Rated	1/4"	0000000	00000
1/4"-20	25/32"	3 1/2"	7 ga.	0.201"	118°	2	UNC	H3	1/4"	0000000	00000
1/4"-28	25/32"	3 1/2"	3 ga.	0.213"	118°	2	UNF	H3	1/4"	0000000	00000
5/16"-18	15/16"	3 23/32"	F	0.257"	118°	2	UNC	H3	1/4"	0000000	00000
5/16"-24	15/16"	3 23/32"	I	0.272"	118°	2	UNF	H3	1/4"	0000000	00000
3/8"-16	1 1/8"	3 15/16"	5/16"	0.3125"	118°	2	UNC	H3	1/4"	0000000	00000
3/8"-24	1 1/8"	3 15/16"	Q	0.332"	118°	2	UNF	H3	1/4"	0000000	00000
7/16"-14	1 1/4"	3 3/4"	U	0.368"	118°	2	UNC	H3	1/4"	0000000	00000
7/16"-20	1 1/4"	3 3/4"	25/64"	0.3906"	118°	2	UNF	H3	1/4"	0000000	00000
1/2"-13	1 3/8"	4 1/16"	27/64"	0.4219"	118°	2	UNC	H3	1/4"	0000000	00000
1/2"-20	1 3/8"	4 1/16"	29/64"	0.4531"	118°	2	UNF	H3	1/4"	0000000	00000
9/16"-18	1 5/8"	5 1/2"	33/64"	0.509"	118°	4	UNF	H3	1/4"	0000000	00000
5/8"-11	1 3/4"	5 1/16"	17/32"	0.5313"	118°	4	UNC	H3	1/4"	0000000	00000
5/8"-18	1 3/4"	6 1/16"	37/64"	0.5781"	118°	4	UNF	H3	1/4"	0000000	00000
Titanium Nitride (TiN) Coated High-Speed Steel
6-32	7/16"	3"	36 ga.	0.1065"	118°	2	UNC	H3	1/4"	00000000	00000
8-32	1/2"	3 1/8"	29 ga.	0.136"	118°	2	UNC	H3	1/4"	00000000	00000
10-24	5/8"	3 3/8"	25 ga.	0.1495"	118°	2	UNC	H3	1/4"	00000000	00000
10-32	5/8"	3 3/8"	21 ga.	0.159"	118°	2	UNF	H3	1/4"	00000000	00000
1/4"-20	25/32"	3 1/2"	7 ga.	0.201"	118°	2	UNC	H3	1/4"	00000000	00000
1/4"-28	25/32"	3 1/2"	3 ga.	0.213"	118°	2	UNF	H3	1/4"	00000000	00000
5/16"-18	15/16"	3 23/32"	F	0.257"	118°	2	UNC	H3	1/4"	00000000	00000
5/16"-24	15/16"	3 23/32"	I	0.272"	118°	2	UNF	H3	1/4"	00000000	00000
3/8"-16	1 1/8"	3 15/16"	5/16"	0.3125"	118°	2	UNC	H3	1/4"	00000000	00000
3/8"-24	1 1/8"	3 15/16"	Q	0.332"	118°	2	UNF	H3	1/4"	00000000	00000
7/16"-14	1 1/4"	3 3/4"	U	0.368"	118°	2	UNC	H3	1/4"	00000000	00000
7/16"-20	1 1/4"	3 3/4"	25/64"	0.3906"	118°	2	UNF	H3	1/4"	00000000	00000
1/2"-13	1 3/8"	4 1/16"	27/64"	0.4219"	118°	2	UNC	H3	1/4"	00000000	00000
1/2"-20	1 3/8"	4 1/16"	29/64"	0.4531"	118°	2	UNF	H3	1/4"	00000000	00000
9/16"-18	1 5/8"	5 1/2"	33/64"	0.509"	118°	4	UNF	H3	1/4"	00000000	00000
5/8"-11	1 3/4"	5 1/16"	17/32"	0.5313"	118°	4	UNC	H3	1/4"	00000000	00000
5/8"-18	1 3/4"	6 1/16"	37/64"	0.5781"	118°	4	UNF	H3	1/4"	00000000	00000

Metric

Thread				Drill Bit						Plug Chamfer
Size	Pitch, mm	Lg.	Overall Lg.	Size	Decimal Size Equivalent	Point Angle	No. of Flutes	Pitch Dia. Limit	Hex Shank Size		Each
Uncoated High-Speed Steel
M3	0.5	9/32"	1 27/64"	3/32"	0.0984"	110°	3	Not Rated	1/4"	0000000	000000
M4	0.7	1/2"	3 1/8"	3.3 mm	0.1299"	118°	2	D4	1/4"	0000000	00000
M5	0.8	5/8"	3 3/8"	4.2 mm	0.1653"	118°	2	D4	1/4"	0000000	00000
M6	1	25/32"	3 1/2"	5 mm	0.1968"	118°	2	D5	1/4"	0000000	00000
M7	1	15/16"	3 23/32"	6 mm	0.2362"	118°	2	D5	1/4"	0000000	00000
M8	1.25	15/16"	3 23/32"	6.7 mm	0.2637"	118°	2	D5	1/4"	0000000	00000
M10	1.5	1 1/8"	3 15/16"	8.5 mm	0.3346"	118°	2	D6	1/4"	0000000	00000
M12	1.25	1 3/8"	5 1/16"	10.8 mm	0.4251"	118°	2	D5	1/4"	0000000	00000
M12	1.75	1 3/8"	4 1/16"	10.2 mm	0.4015"	118°	2	D6	1/4"	0000000	00000
M14	1.5	1 5/8"	5 1/2"	12.5 mm	0.4921"	118°	4	D6	1/4"	0000000	00000
M14	2	1 5/8"	5 1/2"	12 mm	0.4724"	118°	4	D7	1/4"	0000000	00000
M16	2	1 3/4"	6 1/16"	14 mm	0.5512"	118°	4	D7	1/4"	0000000	00000
Titanium Nitride (TiN) Coated High-Speed Steel
M3	0.5	3/16"	1 27/64"	3/32"	0.0984"	110°	2	Not Rated	1/4"	00000000	00000
M4	0.7	1/2"	3 1/8"	3.3 mm	0.1299"	118°	2	D4	1/4"	00000000	00000
M5	0.8	5/8"	3 3/8"	4.2 mm	0.1653"	118°	2	D4	1/4"	00000000	00000
M6	1	25/32"	3 1/2"	5 mm	0.1968"	118°	2	D5	1/4"	00000000	00000
M8	1.25	15/16"	3 23/32"	6.7 mm	0.2637"	118°	2	D5	1/4"	00000000	00000
M10	1.5	1 1/8"	3 15/16"	8.5 mm	0.3346"	118°	2	D6	1/4"	00000000	00000
M12	1.75	1 3/8"	4 1/16"	10.2 mm	0.4015"	118°	2	D6	1/4"	00000000	00000
M16	2	1 3/4"	6 1/16"	14 mm	0.5512"	118°	2	D7	1/4"	00000000	00000

Hex Shank Taps for Drills and Screwdrivers

Insert these taps directly into drills, power screwdrivers, and other tools that accept a 1/4" hex shank. They're made of high-speed steel and are for use on most metal and plastic. All have a plug chamfer with 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping. When using them to tap closed-end holes, be sure to leave sufficient space at the bottom for chips to accumulate.

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

Inch

Thread			Drill Bit					Plug Chamfer
Size	Lg.	Overall Lg.	Size	Decimal Size Equivalent	No. of Flutes	Thread Type	Hex Shank Size		Each
Uncoated High-Speed Steel
1/4"-20	11/16"	1 17/32"	7 ga.	0.201"	3	UNC	1/4"	0000000	000000
5/16"-18	3/4"	1 9/16"	F	0.257"	4	UNC	1/4"	0000000	00000
3/8"-16	13/16"	1 19/32"	5/16"	0.3125"	4	UNC	1/4"	0000000	00000

Metric

Thread				Drill Bit				Plug Chamfer
Size	Pitch, mm	Lg.	Overall Lg.	Size	Decimal Size Equivalent	No. of Flutes	Hex Shank Size		Each
Uncoated High-Speed Steel
M3	0.5	7/16"	1 5/16"	2.5 mm	0.0984"	3	1/4"	0000000	000000
M3.5	0.6	3/8"	1 5/16"	2.9 mm	0.1142"	3	1/4"	0000000	00000
M4	0.7	1/2"	1 3/8"	3.3 mm	0.1299"	3	1/4"	0000000	00000
M5	0.8	5/8"	1 7/16"	4.2 mm	0.1653"	3	1/4"	0000000	00000
M6	0.75	11/16"	1 15/32"	5.2 mm	0.2047"	3	1/4"	0000000	00000
M6	1	11/16"	1 9/16"	5 mm	0.1968"	3	1/4"	0000000	00000
M7	1	5/8"	1 1/2"	6 mm	0.2362"	3	1/4"	0000000	00000
M8	0.75	3/4"	1 9/16"	7.2 mm	0.2834"	4	1/4"	0000000	00000
M8	1.25	3/4"	1 9/16"	6.7 mm	0.2637"	4	1/4"	0000000	00000
M10	1	13/16"	1 5/8"	8.9 mm	0.3503"	4	1/4"	0000000	00000
M10	1.5	13/16"	1 5/8"	8.5 mm	0.3346"	4	1/4"	0000000	00000