Cut threads into most metal and plastic. These high-speed steel taps are durable enough for small-scale tapping jobs, but they're not recommended for production use. For better chip flow, choose a tap with fewer flutes.

Drive square-shank taps with a tap wrench or use them in a tap holder for drill presses and milling machines. Uncoated taps are strong enough for most tapping jobs but have the shortest tool life. 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.

Sets include one taper-, one plug-, and one bottoming-chamfer tap.

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

Inch

Thread			Drill Bit								Tap Sets
Size	Lg.	Overall Lg.	Size	Decimal Size Equivalent	No. of Flutes	Thread Type	Pitch Dia. Limit	Shank Type		Each		Each
Taper Chamfer
Uncoated High-Speed Steel
1-64	3/8"	1 11/16"	53 ga.	0.0595"	2	UNC	H1	Square	00000000	000000	00000000	000000
Plug Chamfer
Uncoated High-Speed Steel
1-64	3/8"	1 11/16"	53 ga.	0.0595"	2	UNC	H1	Square	00000000	00000	00000000	00000
Bottoming Chamfer
Uncoated High-Speed Steel
1-64	3/8"	1 11/16"	53 ga.	0.0595"	2	UNC	H1	Square	00000000	00000	00000000	00000

Chip-Clearing Taps for Through Holes

Keep chips clear while tapping. Also known as gun taps, these 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. They're made of high-speed steel for use on most metal and plastic. With a square shank, they're compatible with tap wrenches and 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.

Use uncoated taps for short production runs. Titanium-nitride (TiN) coated taps resist heat and wear better than uncoated taps, letting them last up to twice as long. Titanium-carbonitride (TiCN) coated taps have up to three times the tool life of uncoated taps. Their hard, smooth finish offers superior resistance to chipping, wear, and heat.

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	Pitch Dia. Limit		Each
Uncoated High-Speed Steel
1-64	3/8"	1 11/16"	53 ga.	0.0595"	2	UNC	H2	00000000	000000
Titanium Nitride (TiN) Coated High-Speed Steel
1-64	3/8"	1 11/16"	53 ga.	0.0595"	2	UNC	H2	00000000	00000
Titanium Carbonitride (TiCN) Coated High-Speed Steel
1-64	3/8"	1 11/16"	53 ga.	0.0595"	2	UNC	H2	00000000	00000

Tap Sets

Taper, Plug, and Bottoming Chamfer Set with Plastic Case

Plug Chamfer Set with Metal Case

These taps are for use on most metal and plastic. They have a square shank that's compatible with tap wrenches and tap holders for drill presses and milling machines.

Use uncoated high-speed steel taps for small-scale tapping jobs.

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.

Inch Sets—Same Tap Size (Taper, Plug, and Bottoming Chamfer)

				Drill Bit
Tap Sizes Included	Thread Type	Thread Lg.	Overall Lg.	Size	Decimal Size Equivalent	No. of Flutes	Pitch Dia. Limit	Container Type	No. of Pieces		Each
Uncoated High-Speed Steel
1-64	UNC	3/8"	1 11/16"	53 ga.	0.0595"	2	H1	Plastic Case	3	00000000	000000

Inch Sets—Assorted Tap Sizes (Plug Chamfer)

Uncoated High-Speed Steel
No. of Pieces	Tap Sizes Included	Thread Type	Container Type		Each
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 12-28	UNC, UNF	Metal Case	00000000	0000000

Chip-Clearing Tap Sets for Through-Holes

Sets include multiple tap sizes for threading different hole diameters. Also known as gun taps, all 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. They're made of high-speed steel and are for use on most metal and plastic. With a square shank, they're compatible with tap wrenches and tap holders for drill presses and milling machines. Their plug chamfer starts threads with moderate torque and is good for start-to-finish tapping.

Taps with a gold-oxide finish produce less friction than uncoated taps, but do not last as long as titanium-nitride (TiN) coated taps.

Gold-Oxide High-Speed Steel
No. of Pieces	Chamfer Type	Tap Sizes Included	Thread Type	No. of Flutes	Container Type		Each
19	Plug	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	UNC, UNF	2	Metal Case	00000000	0000000