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Round silver metal die with knurled edge and adjustment slot

Drill America

Drill America DWTSR112-1230 1/2"-30 HSS Round Adjustable Die

SKU CH-VNE7-8HFP5

Cuts 1/2"-30 threads in pipe and tubing using adjustable high-speed steel for extended wear life

  • HSS construction delivers longer wear life for threading tasks
  • Adjustable fine-pitch screw allows precise thread fit control
  • Dual chamfers enable threading and shoulder-close cutting in one tool
  • Beveled slot design supports machine-holder adjustment without removing die
  • California Proposition 65 warning applies — contains chemicals linked to cancer and reproductive harm

Threading Tool for 1/2"-30 Applications

This high-speed steel round adjustable die cuts external threads on rods or pipes with a 1/2"-30 specification. It is designed for machinists and maintenance technicians who need to create or repair threads in a workshop or field setting. The tool suits users working with compatible fastener standards.

Replacing Worn or Fixed-Size Dies

This adjustable die replaces fixed dies that cannot compensate for wear or fit variation. The fine-pitch adjustment screw lets the user open or close the die to achieve the required thread class. The upgrade is worth it when thread tolerance must be held across multiple batches or when threading close to a shoulder.

Simple Holder Installation

The die fits standard 1-1/2 inch outer-diameter die holders and can be secured with the holder's built-in adjusting screws after removing the die's own screw. Both faces are chamfered, with a 2 to 3 thread lead on one side and a shorter lead on the other for shoulder work. California Proposition 65 warnings apply to this product.

Highlights

  • HSS construction delivers longer wear life for threading tasks
  • Adjustable fine-pitch screw allows precise thread fit control
  • Dual chamfers enable threading and shoulder-close cutting in one tool
  • Beveled slot design supports machine-holder adjustment without removing die
  • California Proposition 65 warning applies — contains chemicals linked to cancer and reproductive harm

Specifications

BrandDRILL AMERICA

Questions about this item

What outer diameter holder fits the 1-1/2" round die?

The die has a 1-1/2 inch outside diameter, so it fits standard round die stocks or machine holders made for that size. The beveled adjusting slot lets you remove the screw and use the holder's own adjusting screws instead.

How do you adjust the thread size on this HSS die?

Turn the fine-pitch adjusting screw to open or close the split die. A common mistake is forcing the screw past its range, which can crack the die or strip the screw threads. Make small adjustments and test on scrap material each time.

When should the die be replaced due to wear?

Replace it when threads come out undersized, torn, or show excessive flank wear even after adjustment. High-speed steel resists wear longer than carbon steel, but the 30 TPI fine pitch dulls faster than coarse dies in abrasive materials.

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