9/16"-12 Dies | McMaster-Carr

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21 Products

Screw Thread Dies

Use these dies to create external threads on bolts, studs, and rods. They're shaped for use with a die wrench. Loosen and tighten the die with the included set screw to adjust thread depth.

Carbon steel dies are for use on most metal and plastic. Uncoated high-speed steel dies last longer than carbon steel dies when cutting similar material.

		Uncoated Carbon Steel		Uncoated High-Speed Steel
Thread Size	Includes		Each		Each
UNC Right-Hand Thread
1 1/2" OD
9/16"-12	Set Screw	00000000	000000	0000000	000000
2" OD
9/16"-12	Set Screw	00000000	00000	00000000	00000

Thread Repairing Dies

Restore rusted and damaged screw threads. These dies are hex shaped for use with conventional wrenches.

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

UNC Right-Hand Thread
Thread Size	Wd.	Material		Each
9/16"-12	1 1/16"	Carbon Steel	0000000	000000

Thread Repairing Dies for Tight Spots

A smaller width than standard hex dies lets you repair rusted and damaged threads in tight spaces. These dies are hex shaped for use with conventional wrenches.

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

UNC Right-Hand Thread
Thread Size	Wd.	Material		Each
9/16"-12	7/8"	Carbon Steel	00000000	00000

Left-Hand Thread Repairing Dies

Repair rusted and damaged left-hand screw threads. These dies are hex shaped for use with conventional wrenches.

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

UNC Left-Hand Thread
Thread Size	Wd.	Material		Each
9/16"-12	1 1/16"	Carbon Steel	0000000	000000

Left-Hand Thread Repairing Dies for Tight Spots

With a smaller width than regular hex dies, these dies are suitable for repairing rusted and damaged left-hand threads in tight spaces. They're hex shaped for use with conventional wrenches.

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

UNC Left-Hand Thread
Thread Size	Wd.	Material		Each
9/16"-12	7/8"	Carbon Steel	00000000	00000

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

Carbon steel taps are for thread repair and occasional tapping.

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

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

Carbon Steel
No. of Pieces	Tap Sizes Included	Tap Chamfer Type	Die Shape	Die Sizes Included	Wd.	Container Type	Includes		Each
Right-Hand Thread
53	6-32, 8-32, 10-24, 10-32, 12-24, 1/8"-27, 1/4"-18, 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, 3/4"-10, and 3/4"-16	Plug, Taper	Hex	6-32, 8-32, 10-24, 10-32, 12-24, 1/8"-27, 1/4"-18, 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, 3/4"-10, and 3/4"-16	1", 1 7/16"	Plastic Case	Die Wrench (2), Screwdriver, Tap Wrench (3), Thread Gauge	0000000	0000000
65	4-40, 6-32, 8-32, 10-24, 10-32, 12-24,; 1/8"-27, 1/4"-18, 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, 3/4"-10, 3/4"-16,; 7/8"-9, 7/8"-14, 1"-8, and 1"-14	Plug, Taper	Hex	4-40, 6-32, 8-32, 10-24, 10-32, 12-24; 1/8"-27, 1/4"-18, 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, 3/4"-10,; 3/4"-16, 7/8"-9, 7/8"-14, 1"-8, and 1"-14	5/8", 1", 1 7/16", 1 13/16"	Plastic Case	Die Wrench (4), Tap Wrench (4), Thread Gauge	00000000	000000
High-Speed Steel
Right-Hand Thread
58	6-32, 8-32, 10-24, 10-32, 12-24, 1/8"-27, 1/4"-18, 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, 3/4"-10, and 3/4"-16	Plug	Hex	6-32, 8-32, 10-24, 10-32, 12-24, 1/8"-27, 1/4"-18, 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, 3/4"-10, and 3/4"-16	1", 1 7/16"	Plastic Case	Die Wrench (2), Extractor (5), Screwdriver, Tap Wrench (3), Thread Gauge	00000000	000000

Thread Repairing Tap, Die, and File Sets

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.

Carbon Steel
Number of Pieces	Tap Sizes Included	Die Sizes Included	File Sizes Included	Container Type		Each
Right-Hand Thread
53	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, M6 × 1.00 mm, M8 × 1.25 mm, M10 × 1.25 mm, M10 × 1.50 mm, M12 × 1.25 mm, M12 × 1.50 mm, and M12 × 1.75 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, 3/4"-10, 3/4"-16, 3/4"-20, M6 × 1.00 mm, M6 × 1.25 mm, M7 × 1.00 mm, M8 × 1.00 mm, M8 × 1.25 mm, M8 × 1.50 mm, M10 × 1.00 mm, M10 × 1.25 mm, M10 × 1.50 mm, M12 × 1.25 mm, M12 × 1.50 mm, M12 × 1.75 mm, M14 × 1.25 mm, M14 × 1.50 mm, and M20 × 1.50 mm	For 11 to 24 threads per inch, For 0.8 to 3 mm thread pitches	Plastic Case	00000000	0000000

Thread Repairing Die Sets

Repair rusted or damaged external threads in a variety of sizes. These dies are hex shaped for use with conventional wrenches.

Plastic Pouch
Number of Pieces	Thread Direction	Die Sizes Included		Each
Carbon Steel
7	Right Hand	1/4"-20 (7/16" Wd.), 5/16"-18 (1/2" Wd.), 3/8"-16 (9/16" Wd.), 7/16"-14 (11/16" Wd.), 1/2"-13 (3/4" Wd.), 9/16"-12 (7/8" Wd.), and 5/8"-11 (15/16"Wd.)	0000000	000000
7	Left Hand	1/4"-20 (7/16" Wd.), 5/16"-18 (1/2" Wd.), 3/8"-16 (9/16" Wd.), 7/16"-14 (11/16" Wd.), 1/2"-13 (3/4" Wd.), 9/16"-12 (7/8" Wd.), and 5/8"-11 (15/16" Wd.)	0000000	00000
8	Right Hand	1/4"-20 (7/16" Wd.), 5/16"-18 (1/2" Wd.), 3/8"-16 (9/16" Wd.), 7/16"-14 (11/16" Wd.), 1/2"-13 (3/4" Wd.), 9/16"-12 (7/8" Wd.), 5/8"-11 (15/16" Wd.), and 3/4"-10 (1 1/8" Wd.)	0000000	00000
Plastic Case
Carbon Steel
8	Right Hand	1/4"-20 (19/32" Wd.), 5/16"-18 (11/16" Wd.), 3/8"-16 (25/32" Wd.), 7/16”-14 (7/8" Wd.), 1/2"-13 (1 1/16" Wd.), 9/16"-12 (1 1/16" Wd.), 5/8"-11 (1 1/4" Wd.), and 3/4"-10 (1 7/16" Wd.)	000000	000000
10	Right Hand	1/4"-20 (19/32" Wd.), 5/16"-18 (11/16" Wd.), 3/8"-16 (25/32" Wd.), 7/16"-14 (7/8" Wd.), 1/2"-13 (1 1/16" Wd.), 9/16"-12 (1 1/16" Wd.), 5/8"-11 (1 1/4" Wd.), 3/4"-10 (1 7/16" Wd.), 7/8"-9 (1 5/8" Wd.), and 1"-8 (1 13/16" Wd.)	000000	000000
20	Right Hand	1/4"-20 (19/32" Wd.), 1/4"-28 (19/32" Wd.), 5/16"-18 (11/16" Wd.), 5/16"-24 (11/16" Wd.), 3/8"-16 (25/32" Wd.), 3/8"-24 (25/32" Wd.), 7/16"-14 (7/8" Wd.), 7/16"-20 (7/8" Wd.), 1/2"-13 (1 1/16" Wd.), 1/2"-20 (1 1/16" Wd.), 9/16"-12 (1 1/16" Wd.), 9/16"-18 (1 1/16 Wd."), 5/8"-11 (1 1/4" Wd.), 5/8"-18 (1 1/4" Wd.), 3/4"-10 (1 7/16" Wd.), 3/4"-16 (1 7/16" Wd.), 7/8"-14 (1 5/8" Wd.), 7/8"-9 (1 5/8 Wd."), 1"-8 (1 13/16" Wd.), and 1"-14 (1 13/16" Wd.)	000000	000000

Thread Repairing Die and File Sets for Tight Spots

Renew external threads in a wide range of sizes. The dies in these sets have a narrower width than standard dies, making them a good choice for thread repair in tight spots. They're hex shaped for use with conventional wrenches.

Carbon Steel
Number of Pieces	Die Sizes Included	File Sizes Included	Container Type		Each
Right-Hand Thread
15	1/4"-20 (7/16" Wd.), 1/4"-28 (7/16" Wd.), 5/16"-18 (1/2" Wd.), 5/16"-24 (1/2" Wd.), 3/8"-16 (9/16" Wd.), 3/8"-24 (9/16" Wd.), 7/16"-14 (11/16" Wd.), 7/16"-20 (11/16" Wd.), 1/2"-13 (3/4" Wd.), 1/2"-20 (3/4" Wd.), 9/16"-12 (7/8" Wd.), 9/16"-18 (7/8" Wd.), 5/8"-11 (15/16" Wd.), and 5/8"-18 (15/16" Wd.)	For 11 to 24 threads per inch	Plastic Case	0000000	000000
18	1/4"-20 (7/16" Wd.), 1/4"-28 (7/16" Wd.), 5/16"-18 (1/2" Wd.), 5/16"-24 (1/2" Wd.), 3/8"-16 (9/16" Wd.), 3/8"-24 (9/16" Wd.), 7/16"-14 (11/16" Wd.), 7/16"-20 (11/16" Wd.), 1/2"-13 (3/4" Wd.), 1/2"-20 (3/4" Wd.), 9/16"-12 (7/8" Wd.), 9/16"-18 (7/8" Wd.), 5/8"-11 (15/16" Wd.), 5/8"-18 (15/16" Wd.), 3/4"-10 (1 1/16" Wd.), and 3/4"-16 (1 1/16" Wd.)	For 9 to 32 threads per inch, For 11 to 24 threads per inch	Plastic Case	0000000	00000

Two-Piece Thread Repairing Die Sets

Clamp these dies around your workpiece, so you can start thread repair anywhere along the length of a bolt, stud, or rod. They're hex shaped for use with conventional wrenches.

Tool Steel
Number of Pieces	Die Sizes Included	Wd.	Container Type		Each
Right-Hand Thread
20	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, 3/4"-10, 3/4"-16, 7/8"-9, 7/8"-14, 1"-8, 1"-14	1", 1 3/8", 1 3/4"	Plastic Case	0000000	0000000