5-40 Taps | McMaster-Carr

A range of sizes that remove chips so they don’t ruin the threads or jam the tap. The spiral-point flutes force chips through the hole to prevent buildup and create threads faster than standard taps. Also known as gun taps.

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

Gold Oxide—The finish increases wear resistance and reduces friction to improve chip flow, so these taps can last 50% longer than uncoated taps.

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.

								Spiral-Point Flute for Through Holes
	No. of Pieces	Thread Size	Thread Type	No. of Flutes	Container Type	Shank Type	Mfr.	Chamfer Type		Each
High-Speed Steel







				Gold Oxide

				19	0-80, 1-64, 1-72, 2-56, 2-64, 3-48, 3-56, 4-40, 4-48, 5-40, 5-44, 6-32, 6-40, 8-32, 8-36, 10-24, 10-32, 12-24, 12-28	UNF, UNC	2	Metal Case	Square	Viking Norseman Drill	Plug	27275A22	0000000

Taps

Cut threads into holes so screws, bolts, and rods fit snugly. Our basic taps have straight flutes that are good for most jobs.

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

Cobalt Steel—These taps resist higher temperatures and and last twice as long as high-speed steel taps. They thread hard materials such as iron and hardened steel without damaging their cutting edges.

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

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.

Titanium Carbon Nitride (TiCN) Coated—Resist heat, chipping, and wear for three times the life of uncoated taps.

Taper Chamfer—Good for both starting holes and threading through holes. These taps have the longest taper to gradually engage with the material, reducing the force needed to turn them. They can't reach the bottom of blind holes, however, so you will likely need to finish with a bottoming-chamfer tap.

Plug Chamfer—Our go-to chamfer type, these thread both through holes and blind holes. The tapered section is shorter than a taper chamfer and longer than bottoming chamfer. As a result, they're easier to turn than bottoming taps but require more force than taper taps.

Bottoming Chamfer—Cut all the way to the bottom of blind holes with taps that have the shortest taper. Since these require the most force to turn, they’re often used to finish holes started by taper- or plug-chamfer taps.

Number of Flutes—Taps with fewer flutes have more space to capture chips, so you won’t have to clear them as often. However, they can be more difficult to keep straight in the hole.

Taps Sold as Sets—Include one tap of each chamfer type.

	Taps															Taps Sold as Sets
						Drill Bit				Taper Chamfer		Plug Chamfer		Bottoming Chamfer
	Thread Size	Thread Lg.	Overall Lg.	Thread Type	No. of Flutes	Size	Decimal Size Equiv.	Shank Type	Mfr.		Each		Each		Each	No. of Taps		Each
High-Speed Steel







				Uncoated

				5-40	5/8"	1 15/16"	UNC	2	38 Ga.	0.1015"	Square	Widia	———	0	26955A25	00000	26955A65	00000	—	———	0


				5-40	5/8"	1 15/16"	UNC	3	38 Ga.	0.1015"	Square	Widia	2522A666	00000	2522A716	0000	2522A736	0000	3	2522A866	000000




						Titanium Nitride (TiN) Coated

						5-40	5/8"	1 15/16"	UNC	2	38 Ga.	0.1015"	Square	Cleveland	———	0	26955A14	00000	26955A72	00000	—	———	0


						5-40	5/8"	1 15/16"	UNC	3	38 Ga.	0.1015"	Square	Viking Norseman Drill	2636A22	00000	2636A42	00000	2636A62	00000	3	2636A82	00000




								Titanium Carbon Nitride (TiCN) Coated

								5-40	5/8"	1 15/16"	UNC	3	38 Ga.	0.1015"	Square	Cleveland	26545A114	00000	26545A19	00000	26545A144	00000	3	26545A174	00000


								Cobalt Steel







												Uncoated

												5-40	5/16"	1 15/16"	UNC	3	38 Ga.	0.1015"	Square	Viking Norseman Drill	———	0	2662A42	00000	———	0	—	———	0




														Titanium Nitride (TiN) Coated

														5-40	5/16"	1 15/16"	UNC	3	38 Ga.	0.1015"	Square	Viking Norseman Drill	———	0	2662A72	00000	———	0	—	———	0


														Carbon Steel







																		Uncoated

																		5-40	5/8"	1 15/16"	UNS	3	38 Ga.	0.1015"	Square	ICS	26035A277	0000	26035A313	0000	26035A333	0000	—	———	0

Drill Out Tap Extractor Sets for Screw Thread Taps

After using a large-diameter bit to drill a starter hole in a broken tap, drill out the tap with one of these tools. Sets include multiple extractors for use with different tap sizes and two picks for removing the remains.

No. of Pieces	Includes	For Tap Size	Overall Lg.	OD	Material	Container Type		Each
7	Four Tap Extractors, Pin Vise, Two Picks	No. 4, No. 5, No. 6, No. 8, No. 10, No. 12, 1/4", 5/16", 3/8", 7/16", 1/2", M3, M3.5, M4, M5, M6, M7, M8, M10, M12	1 1/4" 1 1/2" 2" 2 1/2"	1/8" 5/64" 3/16" 1/4"	Carbide	Plastic Case	2624A25	0000000

Tap Sets

These sets include a variety of taps for threading holes so screws, bolts, and rods fit snugly.

High-Speed Steel—Single Thread Size Sets

Taper, Plug, and Bottoming

Chamfer Set

The most versatile taps resist heat and wear to stay sharp. They’re good for most metals and plastic. These sets include one of each chamfer type: Taper for starting holes and threading through holes; plug for through holes and blind holes; and bottoming for cutting the closest to the bottom of any hole.

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.

Titanium Carbon Nitride (TiCN) Coated—Resist heat, chipping, and wear for three times the life of uncoated taps.

								Taper Chamfer, Plug Chamfer, Bottoming Chamfer
	No. of Pieces	Thread Size	Thread Type	Container Type	No. of Flutes	Shank Type	Mfr.		Each
Uncoated



		3	5-40	UNC	Plastic Case	3	Square	Widia	2522A866	000000


		Titanium Nitride (TiN) Coated



				3	5-40	UNC	Plastic Case	3	Square	Viking Norseman Drill	2636A82	00000


				Titanium Carbon Nitride (TiCN) Coated



						3	5-40	UNC	Plastic Case	3	Square	Cleveland	26545A174	00000

High-Speed Steel—Multiple Thread Size Sets

Plug Chamfer Set

The most versatile taps resist heat and wear to stay sharp. They’re good for most metals and plastic. These sets include multiple sizes of plug chamfer taps for through holes and blind holes.

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

							Plug Chamfer
	No. of Pieces	Thread Size	Thread Type	Container Type	Shank Type	Mfr.		Each
Uncoated



		19	1 each of sizes 0-80, 1-64, 1-72, 2-56, 2-64, 3-48, 3-56, 4-40, 4-48; 5-40, 5-44, 6-32, 6-40, 8-32, 8-36, 10-24, 10-32, 12-24, and 12-28	UNF, UNC	Metal Case	Square	Widia	27045A21	0000000

Carbon Steel—Single Thread Size Sets

Taper, Plug, and Bottoming

Chamfer Set

The economical choice for occasional hand tapping. These work on most metals and plastic but will dull more quickly than other taps. Sets include one each chamfer type: Taper for starting holes and through holes; plug for through holes and blind holes; and bottoming for cutting the closest to the bottom of any hole.

								Taper Chamfer, Plug Chamfer, Bottoming Chamfer
	No. of Pieces	Thread Size	Thread Type	Container Type	No. of Flutes	Shank Type	Mfr.		Each
Uncoated



		3	5-40	UNS	Plastic Case	3	Square	ICS	26035A413	00000

Tap Extractor Sets for Screw Thread Taps

To extract taps of different sizes, these sets include multiple extractors. Fingers on the extractor grip the flutes on a broken tap. Use with a tap wrench to remove taps with straight flutes from the workpiece.

No. of Pieces	For Three-Flute Tap Size	For Four-Flute Tap Size	Material	Container Type	For Number of Tap Flutes		Each
11	No. 5, No. 6, 1/8", M3, M3.5	No. 8, No. 10, No. 12, No. 14, 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", M4, M4.5, M5, M5.5, M6, M6.3, M7, M8, M9, M10, M11, M12, M12.5, M14, M16, M18, M19, M20, M22, M24, M25	Steel	Plastic Case	3, 4	2561A424	0000000
13	No. 4, No. 5, No. 6, 1/8", M3, M3.5	No. 8, No. 10, No. 12, No. 14, 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", 9/16", 5/8", 11/16", 3/4", M4, M4.5, M5, M5.5, M6, M6.3, M7, M8, M9, M10, M11, M12, M12.5, M14, M16, M18, M19, M20	Steel	Plastic Case	3, 4	2561A425	000000
15	No. 4, No. 5, No. 6, 1/8", M3, M3.5	No. 8, No. 10, No. 12, No. 14, 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 15/32", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1", M2, M4, M4.5, M5, M5.5, M6, M6.3, M7, M8, M9, M10, M11, M12, M12.5, M14, M16, M18, M19, M20, M22, M24, M25	Steel	Plastic Case	3, 4	2561A426	000000

Chip-Clearing Taps

Spiral-Point Flute for Through Holes

Spiral Flute for Blind Holes

Remove long, stringy chips to produce cleaner threads than standard taps. The flute design prevents buildup to protect the quality of the threads and avoid damage to the tap. Since you don’t need to reverse these taps to extract chips, they also create threads faster.

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.

Titanium Carbon Nitride (TiCN) Coated—Resist heat, chipping, and wear for three times the life of uncoated taps.

Spiral-Point Flute for Through Holes—Push chips ahead of the tap and out of through holes. Also known as gun taps.

Spiral Flute for Blind Holes—Pull chips back toward the tap so they won't build up in blind holes. When tapping brittle material like iron that creates fine or powdery debris, choose a straight-flute tap.

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.

Bottoming Chamfer—These taps have the shortest taper to thread close to the bottom of blind holes. They require the most force to turn, so they’re often used to finish holes started by plug-chamfer taps.

					Drill Bit				Spiral-Point Flute for Through Holes				Spiral Flute for Blind Holes
	Thread Size	Thread Lg.	Overall Lg.	Thread Type	Size	Decimal Size Equiv.	Shank Type	Mfr.	Chamfer Type	No. of Flutes		Each	Chamfer Type	No. of Flutes		Each
High-Speed Steel







				Uncoated

				5-40	9/16"	1 15/16"	UNC	38 Ga.	0.1015"	Square	Widia	—	—	———	0	Bottoming	2	2529A45	000000


				5-40	5/8"	1 15/16"	UNC	38 Ga.	0.1015"	Square	Cleveland	Plug	2	2523A445	00000	—	—	———	0
				5-40	5/8"	1 15/16"	UNC	38 Ga.	0.1015"	Square	Widia	—	—	———	0	Plug	2	2529A13	00000




						Titanium Nitride (TiN) Coated

						5-40	19/32"	1 15/16"	UNC	38 Ga.	0.1015"	Square	Widia	—	—	———	0	Bottoming	2	26255A22	00000


						5-40	5/8"	1 15/16"	UNC	38 Ga.	0.1015"	Square	Cleveland	Plug	2	2762A38	00000	—	—	———	0
						5-40	23/32"	1 15/16"	UNC	38 Ga.	0.1015"	Square	Widia	—	—	———	0	Plug	2	26255A21	00000




								Titanium Carbon Nitride (TiCN) Coated

								5-40	5/8"	1 15/16"	UNC	38 Ga.	0.1015"	Square	Widia	Plug	2	2568A34	00000	—	—	———	0

Chip-Clearing Taps for Steel and Stainless Steel

Spiral-Point Flute for Through Holes

Image of ProductInUse. Front orientation. Contains Annotated. Taps. Chip-Clearing Taps for Steel and Stainless Steel, Spiral Flute for Blind Holes.

Spiral Flute for Blind Holes

Made of a high-vanadium alloy, these taps are harder and more wear-resistant than other high-speed steel taps. The flute design prevents buildup to protect the quality of the threads and avoid damage to the tap. Since you don’t need to reverse these taps to extract chips, they also create threads faster.

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

Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these taps can last 50% longer than uncoated taps.

Spiral-Point Flute for Through Holes—Push chips ahead of the tap and out of through holes. Also known as gun taps.

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				Spiral-Point Flute for Through Holes			Spiral Flute for Blind Holes
	Thread Size	Thread Lg.	Overall Lg.	Thread Type	No. of Flutes	Size	Decimal Size Equiv.	Shank Type	Mfr.	Chamfer Type		Each	Chamfer Type		Each
High-Speed Steel







				Black Oxide

				5-40	19/32"	1 15/16"	UNC	2	38 Ga.	0.1015"	Square	Widia	Plug	2684A64	000000	Bottoming	27055A33	000000

Chip-Free Taps

No flutes, no chips. Press threads into material for zero buildup to slow you down or damage the tap. Since these displace rather than cut material, they create stronger, cleaner threads. They require an exact hole size, however, or tapping can be difficult and result in weak threads. Fluteless taps are faster and require more force to drive than fluted taps, so they're commonly used in production work on a milling machine. Also known as cold-forming taps.

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

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

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







				Uncoated

				5-40	5/16"	1 15/16"	UNC	0	33 Ga.	0.113"	Square	Widia	2531A37	000000	———	0


				5-40	5/8"	1 15/16"	UNC	0	33 Ga.	0.113"	Square	Widia	———	0	2531A49	000000

Chip-Clearing Taps for Aluminum, Brass, and Bronze

Spiral Flute for Through Holes

Spiral Flute for Blind Holes

Long, gummy strands from soft metals won’t get stuck on the tap or in the hole. With two layers of slippery coating over spiral flutes, these taps prevent chip buildup that can harm the threads and the tap.

Cobalt Steel—Tough and wear resistant, cobalt taps last twice as long as high-speed steel. They also can run at higher temperatures without damage to their cutting edges.

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

Spiral Flute for Through Holes—Left-hand flutes push chips ahead of the tap and out of through holes.

Spiral Flute for Blind Holes—Pull chips back toward the tap so they won't build up in blind holes.

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				Spiral Flute for Through Holes				Spiral Flute for Blind Holes
	Thread Size	Thread Lg.	Overall Lg.	Thread Type	Size	Decimal Size Equiv.	Shank Type	Mfr.	Chamfer Type	No. of Flutes		Each	Chamfer Type	No. of Flutes		Each
Cobalt Steel







				Titanium Nitride (TiN) Coated/Chromium Carbide (CrC) Coated

				5-40	5/16"	2 13/64"	UNC	38 Ga.	0.1015"	Square	Widia	Plug	2	2687A43	000000	Bottoming	3	2687A76	000000

Drill Out Tap Extractors for Screw Thread Taps

After using a large-diameter bit to drill a starter hole in a broken tap, drill out the tap with one of these tools. Remove the remains with a scriber or pick.

For Tap Size	OD	Overall Lg.	Material		Each
No. 4, No. 5, No. 6, M3, M3.5	5/64"	1 1/4"	Carbide	2624A11	000000

Tap and Drill Bit Cabinets

Drawers and labeled compartments provide space for keeping tools organized. Taps and drill bits are not included.

				Overall
	Holds Tap Sizes	No. of Compartments	No. of Drawers	Wd.	Dp.	Ht.	Material	Lock Type	No. of Keys Included		Each
For Taps







				For Inch Taps

				2-56 to 12-28	60	5	14 5/8"	7 3/8"	7 3/4"	Steel	—	—	2543A48	0000000




						For Inch, Metric Taps

						1/4"-20 to 1 1/2"-12 2-56 to 12-28 M2.5 × 0.45 mm to M30 × 3.5 mm	152	4	26"	12"	12 1/2"	Steel	Keyed	2	2551A72	000000

Chip-Clearing Taps for Nickel

Spiral Flute for Through Holes

Spiral Flute for Blind Holes

Avoid heat buildup that can deform material and prematurely wear taps when threading nickel alloys. The body on these taps narrows closer to the flutes for better coolant flow and less contact with the workpiece. Spiral flutes prevent stuck chips that can slow you down and decrease the quality of the threads.

Cobalt Steel—Tough and wear resistant, cobalt taps last twice as long as high-speed steel. They also can run at higher temperatures without damage to their cutting edges.

Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these taps can last 50% longer than uncoated taps.

Spiral Flute for Through Holes—Left-hand flutes push chips ahead of the tap and out of through holes.

Spiral Flute for Blind Holes—Pull chips back toward the tap so they won't build up in blind holes.

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				Spiral Flute for Through Holes				Spiral Flute for Blind Holes
	Thread Size	Thread Lg.	Overall Lg.	Thread Type	Size	Decimal Size Equiv.	Shank Type	Mfr.	Chamfer Type	No. of Flutes		Each	Chamfer Type	No. of Flutes		Each
Cobalt Steel







				Black Oxide

				5-40	3/8"	1 15/16"	UNC	38 Ga.	0.1015"	Square	Widia	Plug	3	25595A74	000000	—	—	———	0


				5-40	5/8"	1 15/16"	UNC	38 Ga.	0.1015"	Square	Widia	—	—	———	0	Plug	3	2626A14	000000
				5-40	5/8"	1.95"	UNC	38 Ga.	0.1015"	Square	Widia	—	—	———	0	Plug	3	25595A17	00000

Left-Hand Thread Chip-Clearing Taps

Spiral-Point Flute for Through Holes

Chips won't slow you down when creating threads to join counter-clockwise rotating parts. Left-hand threads keep components such as flywheels and propellers from loosening and spinning off. These taps force chips through the hole so there’s no buildup to damage the threads or the tap. Since you don’t need to reverse taps to extract chips, they also form threads faster than standard left-hand taps.

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.

Titanium Carbon Nitride (TiCN) Coated—Resist heat, chipping, and wear for three times the life of uncoated taps.

Spiral-Point Flute for Through Holes—Push chips ahead of the tap and out of through holes. Also known as gun taps.

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				Spiral-Point Flute for Through Holes
	Thread Size	Thread Lg.	Overall Lg.	Thread Type	Size	Decimal Size Equiv.	Shank Type	Mfr.	Chamfer Type	No. of Flutes		Each
High-Speed Steel







				Uncoated

				5-40	5/8"	1 15/16"	UNC	38 Ga.	0.1015"	Square	GWS	Plug	2	25315A49	000000




						Titanium Nitride (TiN) Coated

						5-40	5/8"	1 15/16"	UNC	38 Ga.	0.1015"	Square	GWS	Plug	2	25315A71	00000




								Titanium Carbon Nitride (TiCN) Coated

								5-40	5/8"	1 15/16"	UNC	38 Ga.	0.1015"	Square	GWS	Plug	2	25315A87	00000

Quick-Change Hex Shank Drill Taps for Drills and Screwdrivers

Save time when you need to change drill taps frequently. The grooved shank snaps directly into drills, power screwdrivers, and other tools that accept a _1/4" hex shank. However, these taps aren’t rated for impact drivers. With a drill bit point to drive into the workpiece, they can drill and tap holes in a single step. They’re made of high-speed steel and are for use on most metal and plastic.

These taps have a plug chamfer with 3-5 chamfered cutting threads, so they’re suitable for start-to-finish tapping.

Uncoated High-Speed Steel—Uncoated taps are strong enough for most tapping jobs but have the shortest tool life.

Spiral Flute—Taps with spiral flutes keep chips clear by drawing them back toward the tap and out of the hole.

	Thread			Drill Bit									Plug Chamfer
	Size	Lg.	Overall Lg.	Size	Decimal Size Equiv.	Point Angle	Flute Type	No. of Flutes	Thread Type	Pitch Dia. Limit	Hex Shank Size	Mfr.		Each
Uncoated High-Speed Steel



		5-40	5/16"	1 27/64"	7/64"	0.1024"	110°	Spiral	2	UNC	Not Rated	1/4"	Volkel	3464A82	000000

Chip-Clearing Taps for Titanium

Spiral Flute for Through Holes

Spiral Flute for Blind Holes

Sharp, angled flutes cut through tough titanium alloys while reducing heat and preventing clogs. These taps draw out chips gradually to create clean threads and protect the tap from jamming or breaking.

Cobalt Steel—Tough and wear resistant, cobalt taps last twice as long as high-speed steel. They also can run at higher temperatures without damage to their cutting edges.

Black Oxide—The dark finish increases wear resistance and reduces friction to improve chip flow, so these taps can last 50% longer than uncoated taps.

Spiral Flute for Through Holes—Left-hand flutes push chips ahead of the tap and out of through holes.

Spiral Flute for Blind Holes—Pull chips back toward the tap so they won't build up in blind holes.

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				Spiral Flute for Through Holes		Spiral Flute for Blind Holes
	Thread Size	Thread Lg.	Overall Lg.	Thread Type	Chamfer Type	No. of Flutes	Size	Decimal Size Equiv.	Shank Type	Mfr.		Each		Each
Cobalt Steel







				Black Oxide

				5-40	13/32"	2 3/16"	UNC	Plug	2	38 Ga.	0.1015"	Square	Emuge-Franken	2439A14	000000	2401A31	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		Bottoming Chamfer
	For Insert Size	Thread Lg.	Overall Lg.	For Insert Thread Type	No. of Flutes	Size	Decimal Size Equiv.	Shank Type	Mfr.		Each		Each
High-Speed Steel







				Uncoated

				5-40	3/4"	2 1/8"	UNC	3	29 Ga.	0.136"	Square	Heli-Coil	91709A061	000000	91709A413	000000

Drill Taps

Spiral Flute

Drill holes and cut threads without switching tools. Made of high-speed steel, these taps are for use on most metal and plastic. The square shank is compatible with tap holders for drill presses and milling machines. All have a plug chamfer with 3-5 chamfered cutting threads, so they're suitable for start-to-finish tapping.

Uncoated High-Speed Steel—Uncoated taps are strong enough for most tapping jobs but have the shortest tool life.

Spiral Flute—Taps with spiral flutes keep chips clear by drawing them back toward the tap and out of the hole.

	Thread			Drill Bit								Plug Chamfer
	Size	Lg.	Overall Lg.	Size	Decimal Size Equiv.	Point Angle	Flute Type	No. of Flutes	Thread Type	Pitch Dia. Limit	Mfr.		Each
Uncoated High-Speed Steel



		5-40	13/32"	1 15/16"	38 Ga.	0.1015"	110°	Spiral	2	UNC	H2	Regal Cutting Tools	2748A16	000000

Helical Threaded Insert Assortments with Installation Tools

Repair damaged threads or create new ones. These convenient assortments include helical inserts, an installation tool for each thread size, a drill bit, and a tap. The inserts are also known as Heli-Coil inserts.

Pronged—The prong attaches to an installation tool for precise control as you drive inserts in. Remove the prong with a punch or break-off tool before inserting a screw.

18-8 Stainless Steel—The choice for wet and outdoor environments, these inserts resist rust and mild chemicals.

	Drill Bit Size	For Max. Hole Dia.		Each
Pronged







	18-8 Stainless Steel

	36	5-40 Thread × 0.188" Installed Lg. (12 Each) 5-40 Thread × 1/4" Installed Lg. (12 Each) 5-40 Thread × 1/8" Installed Lg. (12 Each) Drill Bit Installation Tool Prong Break-Off Tool Through-Hole Tap	Coarse	29 Ga.	0.136"	91732A903	0000000

Tap Extractors for Screw Thread Taps

Fingers on the extractor grip the flutes on a broken tap. Use with a tap wrench to remove taps with straight flutes from the workpiece without damaging the surrounding threads.

Tap Extractors						Replacement Tap Extractor Fingers
For Tap Size	Material	Square Shank Size	Choose a Number of Tap Flutes		Each	Choose a Number of Tap Flutes	Pkg. Qty.		Pkg.
No. 5, 1/8", M3	Steel	0.083"	2, 3	2561A522	000000	2, 3	12	2561A547	000000