3/4"-20 Dies | McMaster-Carr

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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. Uncoated high-speed steel dies last longer than carbon steel dies when cutting similar material.

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

		Uncoated High-Speed Steel
Thread Size	Includes		Each
UNEF Right-Hand Thread
2" OD
3/4"-20	Set Screw	000000000	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