British Standard Thread Taps

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Thread Type

For Insert Thread Type

BSPP

System of Measurement

Pipe Size

For Use On

Thread Size

For Hole Type

Chamfer Type

Die Sizes Included

Threads per Inch

Thread Pitch

Component

Sold As

Tap Sizes Included

1/8, 1/4, 3/8, 1/2, 3/4, and 1

Application

Number of Pieces

Number of Drill Bits

Number of Dies

Shank Type

Square

Number of Taps

Material

Carbon Steel

High-Speed Steel

Thread Direction

Right Hand

Export Control Classification Number (ECCN)

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DFARS Specialty Metals

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54 Products

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.

Taper Chamfer—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—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.

	Drill Bit Sizes Included	Container Type	Includes	Tap Chamfer Type		Each
Carbon Steel







	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, 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, 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, Z	Plastic Case	Die Wrench (2), Extractor (5), Tap Wrench (3), Thread Gauge (2)	Taper, Plug	00000000	0000000

Pipe and Conduit Taps

Add internal threads to pipe and conduit or components such as manifolds. They have straight flutes that are good for most jobs.

BSPP Thread About BSPP Thread

High-Speed Steel—The most versatile taps resist heat and wear to stay sharp. They’re good for most metals and plastic.

Uncoated—The economical choice, these won't last as long as coated taps.

Titanium Nitride (TiN) Coated—Run at higher speeds and last twice as long as uncoated taps.

						Drill Bit			Bottoming Chamfer
	Pipe Size	Thread Lg.	Overall Lg.	No. of Flutes	Threads per In.	Size, mm	Decimal Size Equiv.	Shank Type		Each
High-Speed Steel







				Uncoated

				1/8	3/4"	2 1/8"	4	28	8.8	0.3464"	Square	0000000	000000


				1/4	1 1/16"	2 7/16"	4	19	11.8	0.4645"	Square	0000000	00000
				3/8	1 1/16"	2 9/16"	4	19	15	0.5905"	Square	0000000	00000
				1/2	1 3/8"	3 1/8"	4	14	19	0.748"	Square	0000000	00000
				3/4	1 3/8"	3 1/4"	5	14	24	0.9449"	Square	0000000	00000
				1	1 3/4"	3 3/4"	5	11	30	1.1811"	Square	0000000	000000
				1 1/4	1 3/4"	4"	5	11	39.5	1.5551"	Square	0000000	000000
				1 1/2	1 3/4"	4 1/4"	7	11	45	1.7716"	Square	0000000	000000
				2	1 3/4"	4 1/2"	7	11	57	2.244"	Square	0000000	000000




						Titanium Nitride (TiN) Coated

						1/8	3/4"	2 1/8"	4	28	8.8	0.3464"	Square	0000000	00000


						1/4	1 1/16"	2 7/16"	4	19	11.8	0.4645"	Square	0000000	00000
						3/8	1 1/16"	2 9/16"	4	19	15	0.5905"	Square	0000000	00000
						1/2	1 3/8"	3 1/8"	4	14	19	0.748"	Square	0000000	00000
						3/4	1 3/8"	3 1/4"	4	14	24	0.9449"	Square	0000000	00000
						1	1 3/4"	3 3/4"	6	11	30	1.1811"	Square	0000000	000000
						1 1/4	1 3/4"	4"	6	11	39.5	1.5551"	Square	0000000	000000
						1 1/2	1 3/4"	4 1/4"	6	11	45	1.7716"	Square	0000000	000000

BSPT Thread About BSPT Thread

High-Speed Steel—The most versatile taps resist heat and wear to stay sharp. They’re good for most metals and plastic.

Uncoated—The economical choice, these won't last as long as coated taps.

Titanium Nitride (TiN) Coated—Run at higher speeds and last twice as long as uncoated taps.

						Drill Bit			Bottoming Chamfer
	Pipe Size	Thread Lg.	Overall Lg.	No. of Flutes	Threads per In.	Size, mm	Decimal Size Equiv.	Shank Type		Each
High-Speed Steel







				Uncoated

				1/8	3/4"	2 1/8"	4	28	8.4	0.3307"	Square	0000000	000000


				1/4	1 1/16"	2 7/16"	4	19	11.2	0.4409"	Square	0000000	00000
				3/8	1 1/16"	2 9/16"	4	19	14.5	0.5709"	Square	0000000	00000
				1/2	1 3/8"	3 1/8"	4	14	18	0.7087"	Square	0000000	00000
				3/4	1 3/8"	3 1/4"	5	14	22	0.8661"	Square	0000000	00000
				1	1 3/4"	3 3/4"	5	11	30	1.1811"	Square	0000000	000000
				1 1/4	1 3/4"	4"	5	11	38.5	1.5157"	Square	0000000	000000
				1 1/2	1 3/4"	4 1/4"	7	11	44.5	1.7519"	Square	0000000	000000
				2	1 3/4"	4 1/2"	7	11	56	2.2047"	Square	0000000	000000




						Titanium Nitride (TiN) Coated

						1/8	3/4"	2 1/8"	4	28	8.4	0.3307"	Square	0000000	00000


						1/4	1 1/16"	2 7/16"	4	19	11.2	0.4409"	Square	0000000	00000
						3/8	1 1/16"	2 9/16"	4	19	14.5	0.5709"	Square	0000000	00000
						1/2	1 3/8"	3 1/8"	4	14	18	0.7087"	Square	0000000	00000
						3/4	1 3/8"	3 1/4"	4	14	22	0.8661"	Square	0000000	00000
						1	1 3/4"	3 3/4"	6	11	30	1.1811"	Square	0000000	000000

Tap and Die Sets

Use a single set for many sizes of internal and external threads. The taps and dies are for use on most metal and plastic.

Carbon Steel—Carbon steel taps are for thread repair and occasional tapping.

Plug Chamfer—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-chamfer taps. When using them to tap closed-end holes, be sure to leave sufficient space at the bottom for chips to accumulate.

Taper Chamfer—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.

Hex—Hex-shaped dies are for thread repair and can be used with conventional wrenches.

	Die Shape	Die Sizes Included	Wd.	Container Type	Includes		Each
Carbon Steel Taps and Dies







	Right-Hand Thread

	24	1/8"-28, M3 × 0.50 mm, M4 × 0.70 mm, M5 × 0.80 mm, M6 × 1.00 mm, M7 × 1.00 mm, M8 × 1.25 mm, M9 × 1.25 mm, M10 × 1.50 mm, M12 × 1.50 mm, M12 × 1.75 mm	Plug, Taper	Hex	1/8"-28, M3 × 0.50 mm, M4 × 0.70 mm, M5 × 0.80 mm, M6 × 1.00 mm, M7 × 1.00 mm, M8 × 1.25 mm, M9 × 1.25 mm, M10 × 1.50 mm, M12 × 1.50 mm, M12 × 1.75 mm	1"	Plastic Case	Die Wrench, Tap Wrench	00000000	0000000


	40	1/8"-28, 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, M12 × 1.75 mm	Plug, Taper	Hex	1/8"-28, 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, M12 × 1.75 mm	5/8", 1"	Plastic Case	Die Wrench (2), Tap Wrench (3), Thread Gauge	0000000	000000
	52	1/4"-19, 1/8"-28, 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 × 1.25 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, M12 × 1.75 mm, M14 × 1.25 mm, M14 × 2.00 mm, M16 × 1.50 mm, M16 × 2.00 mm, M18 × 1.50 mm, M18 × 2.50 mm	Plug, Taper	Hex	1/8"-28, 1/4"-19, 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 × 1.25 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, M12 × 1.75 mm, M14 × 1.25 mm, M14 × 2.00 mm, M16 × 1.50 mm, M16 × 2.00 mm, M18 × 1.50 mm, M18 × 2.50 mm	1", 1 7/16"	Plastic Case	Die Wrench (2), Tap Wrench (3), Thread Gauge	0000000	000000
	65	1/8"-28, 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, M12 × 1.75 mm, M14 × 1.25 mm, M14 × 1.50 mm, M14 × 2.00 mm, M16 × 1.50 mm, M16 × 2.00 mm, M18 × 1.50 mm, M18 × 2.50 mm, M20 × 2.50 mm, M22 × 1.50 mm, M24 × 2.00 mm, M24 × 3.00 mm	Plug, Taper	Hex	1/8"-28, 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, M12 × 1.75 mm, M14 × 1.25 mm, M14 × 1.50 mm, M14 × 2.00 mm, M16 × 1.50 mm, M16 × 2.00 mm, M18 × 1.50 mm, M18 × 2.50 mm, M20 × 2.50 mm, M22 × 1.50 mm, M24 × 2.00 mm, M24 × 3.00 mm	5/8", 1", 1 3/16", 1 7/16", 1 13/16"	Plastic Case	Die Wrench (4), Tap Wrench (4), Thread Gauge	0000000	000000

Pipe and Conduit Tap Sets

A range of sizes for adding internal threads to pipe and conduit. These taps can also be used to thread components like manifolds. They have straight flutes that are good for most jobs.

Carbon Steel—The economical choice for occasional hand tapping. These work on most metals and plastic but will dull more quickly than other taps.

	Pipe Size	Thread Type	Chamfer Type	No. of Flutes	Container Type	Shank Type		Each
Carbon Steel



	6	1/8, 1/4, 3/8, 1/2, 3/4, 1	BSPP, Metric	Bottoming	4, 5	Fabric Pouch	Square	00000000	0000000


	6	1/8, 1/4, 3/8, 1/2, 3/4, 1	BSPT, Metric	Plug	4, 5	Fabric Pouch	Square	00000000	000000

Chip-Clearing Pipe and Conduit Taps for Steel and Stainless Steel

Made of a high-vanadium alloy, these taps are harder and more wear-resistant than other high-speed steel taps. The widely spaced flutes prevent buildup that can ruin threads and keep pipe and conduit from making strong connections. Also known as interrupted-thread taps.

BSPP Thread About BSPP Thread

High-Speed Steel—The most versatile taps resist heat and wear to stay sharp. They’re good for most metals and plastic.

Uncoated—The economical choice, these won't last as long as coated taps.

						Drill Bit			Bottoming Chamfer
	Pipe Size	Thread Lg.	Overall Lg.	No. of Flutes	Threads per In.	Size, mm	Decimal Size Equiv.	Shank Type		Each
High-Speed Steel







				Uncoated

				1/8	3/4"	2 5/32"	3	28	8.8	0.3464"	Square	0000000	000000


				1/4	1 3/32"	2 7/16"	3	19	11.8	0.4646"	Square	0000000	00000
				3/8	1 3/32"	2 9/16"	3	19	15.3	0.6024"	Square	0000000	00000
				1/2	1 3/8"	3 9/64"	3	14	19	0.748"	Square	0000000	00000

BSPT Thread About BSPT Thread

High-Speed Steel—The most versatile taps resist heat and wear to stay sharp. They’re good for most metals and plastic.

Uncoated—The economical choice, these won't last as long as coated taps.

						Drill Bit			Bottoming Chamfer
	Pipe Size	Thread Lg.	Overall Lg.	No. of Flutes	Threads per In.	Size, mm	Decimal Size Equiv.	Shank Type		Each
High-Speed Steel







				Uncoated

				1/8	3/4"	2 5/32"	3	28	8.8	0.3464"	Square	0000000	000000


				1/4	1 3/32"	2 7/16"	3	19	11.8	0.4646"	Square	0000000	00000

2-in-1 Pipe and Conduit Taps

One tap threads holes in pipe and conduit from start to finish. Begin with the taper-chamfer end, which gradually engages with the material and requires minimal force to turn the tool. Then flip to the bottoming-chamfer end to thread all the way through the hole.

BSPP Thread About BSPP Thread


	End View

High-Speed Steel—The most versatile taps resist heat and wear to stay sharp. They’re good for most metals and plastic.

							Drill Bit			Taper Chamfer, Bottoming Chamfer
	Pipe Size	Thread Lg.	Overall Lg.	For Wrench Size, mm	No. of Flutes	Threads per In.	Size, mm	Decimal Size Equiv.	For Hex Drive Size, mm		Each
High-Speed Steel







				Uncoated

				1/4	55/64"	2 3/4"	8	4	19	11.8	0.4645"	4	0000000	000000


				3/8	55/64"	2 3/4"	12	4	19	15.3	0.6024"	4	0000000	00000
				1/2	15/16"	3 9/64"	15	4	14	19	0.748"	6	0000000	000000
				3/4	1 1/16"	3 35/64"	19	4	14	24.5	0.9646"	8	0000000	000000
				1	1 9/64"	3 15/16"	24	4	11	30.5	1.2008"	10	0000000	000000

Helical Insert Taps

Match the size of helical inserts so they fit tightly when installed in the hole.

High-Speed Steel—These taps resist heat and wear to stay sharp.

Plug Chamfer—Our go-to chamfer type. With a longer taper than a bottoming chamfer, they are easier to turn but won't thread as close the bottom of a hole.

						Drill Bit			Plug Chamfer
	For Insert Size	Thread Lg.	Overall Lg.	For Insert Thread Type	No. of Flutes	Size	Decimal Size Equiv.	Shank Type		Each
High-Speed Steel







				Uncoated

				1/8	1 1/2"	3 1/8"	BSPP	4	25/64"	0.3906"	Square	000000000	000000


				1/4	1 5/8"	3 1/2"	BSPP	4	17/32"	0.5313"	Square	000000000	00000
				3/8	1 7/8"	4"	BSPP	4	43/64"	0.6719"	Square	000000000	000000
				1/2	2 1/4"	4 7/8"	BSPP	4	27/32"	0.8738"	Square	000000000	000000