M12 Dies | McMaster-Carr

Repair screw threads in a wide range of sizes. The dies are hex shaped for use with conventional wrenches. The taps have a square shank that's compatible with tap wrenches and tap holders for drill presses and drilling machines. With a plug chamfer, all taps have 3-5 chamfered threads and are suitable for thread repair in both through holes and closed-end holes.

	File Sizes Included	Container Type		Each
Carbon Steel







	Right-Hand Thread

	48	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, 9/16"-18, 9/16”-12, M6 × 1.00 mm, M8 × 1.25 mm, M10 × 1.00 mm, M10 × 1.25 mm, M10 × 1.50 mm, M11 × 1.50 mm, M12 × 1.25 mm, M12 × 1.50 mm, M12 × 1.75 mm, M14 × 1.50 mm	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, 9/16"-12, 9/16"-18, 5/8"-11, 5/8"-18, M6 × 1.00 mm, M8 × 1.25 mm, M10 × 1.00 mm, M10 × 1.25 mm, M10 × 1.50 mm, M11 × 1.50 mm, M12 × 1.25 mm, M12 × 1.50 mm, M12 × 1.75 mm, M14 × 1.50 mm	For 11 to 24 threads per inch, For 0.75 to 3 mm thread pitches	Plastic Case	25325A15	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.

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	Mfr.		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	Black & Decker	82955A11	0000000

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.

High-Speed Steel—High-speed steel taps and dies last longer than carbon steel when used on similar material.

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.

Round—Round dies are for cutting threads. Use them with wrenches for round dies.

	Die Shape	Die Sizes Included	Wd.	Container Type	Includes	Mfr.		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	Black & Decker	26025A41	0000000


	40	6-32, 8-32, 10-24, 1/8"-27, 1/4"-20, 5/16"-18, 3/8"-16, 7/16"-14, 1/2"-13, M4 × 0.75 mm, M5 × 0.80 mm, M6 × 1.00 mm, M7 × 1.00 mm, M8 × 1.25 mm, M10 × 1.25 mm, M10 × 1.50 mm, M12 × 1.75 mm	Plug, Taper	Hex	6-32, 8-32, 10-24, 1/8"-27, 1/4"-20, 5/16"-18, 3/8"-16, 7/16"-14, 1/2"-13, M4 × 0.75 mm, M5 × 0.80 mm, M6 × 1.00 mm, M7 × 1.00 mm, M8 × 1.25 mm, M10 × 1.25 mm, M10 × 1.50 mm, M12 × 1.75 mm	5/8", 1"	Plastic Case	Die Wrench (2), Tap Wrench (3), Thread Gauge	Black & Decker	2668A36	000000
	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	Black & Decker	2647A12	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	Black & Decker	2726A66	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	Black & Decker	2726A68	000000


	High-Speed Steel Taps and Dies







					Right-Hand Thread

					19	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	Plug	Round	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	—	Metal Case	Die Wrench, Screwdriver, Tap Wrench (2), Thread Gauge	Volkel	2646A14	000000

Dies

Rotate these dies around studs and rods to create new fastener threads. A cut above lower-quality dies that can leave inferior threads, these are machined in the U.S. to precise dimensions for accuracy and consistency.

They are adjustable, so you can cut a shallow thread that makes it easier to get the die started on the first pass. Turn the set screw to open the die to its largest diameter. Then rotate the die with a round die wrench and adjust the screw as you make additional passes to reach the proper thread size.

Uncoated High-Speed Steel—The most versatile dies stay sharp and cut cleanly, even if you use them every day. They last much longer than carbon steel dies and you won’t have to work as hard to create threads.

Titanium Nitride (TiN)-Coated High-Speed Steel—When you regularly work on challenging metals like stainless steel, choose dies with a TiN coating that reduces friction and resists heat. They turn faster and last longer than uncoated dies.

	Dies								Die Wrenches
			Uncoated High-Speed Steel			Titanium Nitride (TiN)-Coated High-Speed Steel
	Thread Size	Thread Type	Mfr.		Each	Mfr.		Each		Each
1" OD



		M12 × 1.25 mm	Metric	—	———	0	Widell Industries	8349A61	0000000	25565A21	00000


		M12 × 1.75 mm	Metric	Widell Industries	8294A25	000000	Widell Industries	8349A62	000000	25565A21	0000


		1 1/2" OD



				M12 × 1 mm	Metric	Widell Industries	8294A591	00000	—	———	0	25565A22	00000


				M12 × 1.25 mm	Metric	Widell Industries	8294A35	00000	—	———	0	25565A22	00000
				M12 × 1.5 mm	Metric	Widell Industries	8294A61	00000	—	———	0	25565A22	00000
				M12 × 1.75 mm	Metric	Widell Industries	8294A62	00000	—	———	0	25565A22	00000

Thread-Repairing Die Sets

Be ready for repairs by keeping a range of die sizes on hand. These dies smooth out flaws and remove dirt and rust so threads make strong connections. Don’t risk damaging threads further with an inferior quality die. Our dies are machined in the U.S. to precise dimensions for a perfect thread profile. Turn with a hex die wrench or a standard adjustable wrench.

Uncoated Carbon Steel—Hard and wear resistant for a long life, these dies work well on both metal and plastic.

	Thread Size	Thread Type	Wd.	Container Type	Mfr.		Each
Uncoated Carbon Steel



	7	M6, M8, M10, M12, M14, M16, M20	Metric	19/32", 11/16", 7/8", 1 1/16", 1 1/4", 1 5/8"	Plastic Case	Cle-Line	8316A21	0000000

Thread-Repairing Dies

Rescue mangled threads and return them to like-new condition. By repairing threads, you don’t have to replace the fastener or resize holes. These dies smooth out flaws and remove rust so threads engage properly and connections stay strong. Turn them with a hex die wrench or a standard adjustable wrench.

Don’t risk damaging threads further with an inferior-quality die. Our dies are machined in the U.S. to precise dimensions for a perfect thread profile.

Uncoated Carbon Steel—Hard and wear resistant for a long life, these dies work well on both metal and plastic.

				Uncoated Carbon Steel
Thread Size	Thread Type	Wd.	Mfr.		Each
M12 × 1 mm	Metric	1 1/16"	Widell Industries	2573A671	000000
M12 × 1.25 mm	Metric	1 1/16"	Widell Industries	2573A673	00000
M12 × 1.5 mm	Metric	1 1/16"	Widell Industries	2573A59	00000
M12 × 1.75 mm	Metric	1 1/16"	Cle-Line	2573A75	00000

Two-Piece Thread-Repairing Dies

Clamp the two halves of these dies around your bolt, stud, or rod to repair threads anywhere along the length. Since you don't have to spin them into place, they're often used on extra-long fasteners or when you can't access the end of your workpiece. Dies smooth damage, sharpen worn edges, and clean out rust so connections stay secure. Once in position, turn them with a hex die wrench or a standard adjustable wrench.

Black-Oxide Tool Steel—Hard and wear resistant for long life, these dies work well on both metal and plastic.

				Black-Oxide Tool Steel
Thread Size	Thread Type	Wd.	Mfr.		Each
M12 × 1.25 mm	Metric	1"	Lang Tools	8335A71	000000
M12 × 1.5 mm	Metric	1"	Lang Tools	8335A72	00000
M12 × 1.75 mm	Metric	1"	Lang Tools	8335A73	00000

Left-Hand Thread-Repairing Dies

Repair instead of replacing left-hand fasteners, which can be expensive and hard to find. These dies correct flaws and clean out rust so the threads engage properly. Don’t risk damaging threads further with an inferior quality die. Our dies are machined in the U.S. to precise dimensions for a perfect thread profile. Turn them with a hex die wrench or a standard adjustable wrench.

Uncoated Carbon Steel—Hard and wear resistant for a long life, these dies work well on both metal and plastic.

				Uncoated Carbon Steel
Thread Size	Thread Type	Wd.	Mfr.		Each
M12 × 1.5 mm	Metric	1 1/16"	Widell Industries	2573A986	000000
M12 × 1.75 mm	Metric	1 1/16"	Widell Industries	2573A987	00000

Left-Hand Dies

Make your own threads instead of searching for left-hand fasteners, which can be expensive and hard to find. A cut above lower-quality dies that can leave inferior threads, these are machined in the U.S. to precise dimensions for accuracy and consistency. They are adjustable, so you can create a shallow thread that makes it easier to get the die started on the first pass. Turn the set screw to open the die to its largest diameter. Then rotate the die with a round die wrench and adjust the screw as you make additional passes to reach the proper thread size.

	Dies					Die Wrenches
			Uncoated High-Speed Steel
	Thread Size	Thread Type	Mfr.		Each		Each
1" OD



		M12 × 1.75 mm	Metric	Widell Industries	2596A25	000000	25565A21	00000


		1 1/2" OD



				M12 × 1.75 mm	Metric	Widell Industries	2596A42	00000	25565A22	00000

Thread-Repairing Die Nuts

If your wrench can turn a hex nut, it can turn these dies. They match the width of nuts of the same thread size, so you only need one tool to remove the nut, repair threads on the fastener, and put the nut back on. When space is tight, use dies with a ratcheting wrench since it requires minimal clearance to turn. Repairing dies remove imperfections and rust, resulting in threads that engage properly for a strong connection.

				Zinc-Plated Carbon Steel
Thread Size	Thread Type	Wd., mm	Mfr.		Each
M12 × 1.75 mm	Metric	19	Lang Tools	2667A455	00000

Thread-Repairing Flange Nuts

Clean and reshape damaged threads while fastening parts together. Similar to a die, these nuts cut through rust, residue, and weld spatter as they screw on and off to ensure strong connections and prevent sticking during assembly. They have a flange that distributes pressure evenly across the mounting surface without the need for a separate washer. Also known as collar nuts.

High-Strength Steel

Rated Grade 8, Grade G, or Class 10, these are about 25% stronger than medium-strength steel nuts. They are commonly used to fasten components in valves, pumps, and motors. To avoid stripped threads during installation, make sure your screw has a comparable strength rating.

Zinc-Flake-Coated Steel—The most durable zinc coating, zinc flake is a multilayer finish that resists wear for long-term rust protection. Similar to zinc yellow-chromate, it won't hold up to harsh chemicals like stainless steel can.

				Flange, mm
	Thread Size	Wd., mm	Ht., mm	Dia.	Thk.	Fastener Strength Grade/Class		Each
Zinc-Flake-Coated Steel



		M12 × 1.75 mm	18	12	26	1.8	Class 10	90456A140	00000

Thread-Repairing Die Nut Sets

The dies in these sets match the width of hex nuts that are the same thread size, so one tool can turn both. For tight spaces, use with a ratcheting wrench since it requires minimal clearance to turn. Repairing dies remove imperfections and rust so threads engage properly for a strong connection.

	Thread Size	Thread Type	No. of Files	Wd., mm	Container Type	Mfr.		Each
Zinc-Plated Carbon Steel



	5	M6, M8, M10, M12	Metric	—	11, 14, 18, 19	Plastic Pouch	—	2667A322	000000


	10	M6, M8, M10, M12	Metric	1	11, 14, 18, 19, 21	Plastic Pouch	Lang Tools	2616A222	00000

Impact Wrench Die Kits


Shown In Use


Start Threads with Guide Collar	Repair Threads with Flush Collar

Cut many sizes of external threads 15 times faster than by hand. Made of hardened high-speed steel, the dies in these kits are built to handle the high torque of your impact wrench for smooth, continuous cutting. The rapid hammering breaks up and clears chips as you cut, so you don’t need to pause and reverse, even in hard metals such as stainless steel. This prevents jams that could damage your threads. Use the dies two ways: with the flush collar to repair threads or with the guide collar to start threads. These kits also include a deburring tool to chamfer the end of rods before threading.

These kits come with everything you need to pop these dies into a VersaDrive chuck (sold separately). The chuck mounts directly onto the square drive of your impact wrench. It works with any tool with a VersaDrive hex shank, so you don’t need to swap chucks to use drill bits, reamers, and other tools.

Dies									Chucks for 3/8" Square Drives		Chucks for 1/2" Square Drives		Chucks for 3/4" Square Drives
							Hardened Black-Oxide High-Speed Steel
Thread Size	Thread Type	Wd.	For Max. Thread Lg.	Container Type	Includes	Mfr.		Each		Each		Each		Each



	M6 × 1 mm M8 × 1.25 mm M10 × 1.5 mm M12 × 1.75 mm	Metric	15/16"	2"	Plastic Case	Die Holder with 7/16" VersaDrive Hex Shank Four Hardened High-Speed Steel Dies (M6 × 1.0 mm, M8 × 1.25 mm, M10 × 1.5 mm, M12 × 1.75 mm Thread Sizes) Guide Collar for Starting Threads with Four Inserts (For M6 × 1.0 mm, M8 × 1.25 mm, M10 × 1.5 mm, M12 × 1.75 mm Thread Sizes) Flush Collar for Repairing Threads Deburring Tool with 7/16" VersaDrive Hex Shank	Holemaker Technology	9724N33	0000000	9589N111	0000000	9589N113	0000000	9589N114	0000000

Accessories and Replacements for Dies

Optional Extensions

Extend your cutting tool’s reach. These extensions attach to your chuck and accept any tool with a VersaDrive hex shank.

	For Shank		Shank
Overall Lg.	Type	Size	Type	Size	OD	Material		Each
5"	VersaDrive Hex	7/16"	VersaDrive Hex	7/16"	1 7/64"	Black-Oxide Steel	9589N115	000000
12"	VersaDrive Hex	7/16"	VersaDrive Hex	7/16"	1 7/64"	Black-Oxide Steel	9589N116	00000

Replacement Parts

		Each
M6 × 1 mm Die	9724N24	000000
M8 × 1.25 mm Die	9724N25	00000
M10 × 1.5 mm Die	9724N26	00000
M12 × 1.75 mm Die	9724N27	00000
Die Holder	9724N15	000000
Flush Collar	9724N17	00000
Guide Collar	9724N16	00000
Guide Collar Insert for M6 × 1 mm Thread Size	9724N28	00000
Guide Collar Insert for M8 × 1.25 mm Thread Size	9724N29	00000
Guide Collar Insert for M10 × 1.5 mm Thread Size	9724N31	00000
Guide Collar Insert for M12 × 1.75 mm Thread Size	9724N32	00000
Deburring Tool for 5/32" - 3/4" OD Rods	9723N11	00000