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Silver round metal die with adjustment slot

Drill America

Drill America DWTSR1-1280 1/2"-80x1" OD HSS Round Adjustable Die

SKU CH-MCG2-GEW84

High-speed steel round adjustable die cuts 1/2"-80 threads with chamfered faces for shoulder work and fine-pitch adjustment for precise fit

  • High-speed steel construction extends wear life during threading operations
  • Adjustable fine-pitch screw allows precise thread fit control
  • Dual chamfer design supports both standard and shoulder-close threading
  • Round die geometry fits standard machine holders for secure use
  • California Proposition 65 warning applies for cancer and reproductive harm risks

Threading Die for Precision Work

The Drill America DWTSR1-1280 is a high-speed steel round adjustable die built for cutting 1/2"-80 threads with a one-inch outside diameter. It serves machinists and maintenance technicians who need reliable thread creation or repair on hardened materials. The HSS construction delivers extended wear life compared with carbon-steel alternatives. Chamfers on both faces support general threading and work close to shoulders.

Sustained Wear Resistance in Production

Under continuous cutting the high-speed steel body maintains its edge longer than standard dies, reducing the frequency of tool changes during batch work. The fine-pitch adjustment screw lets the operator open or close the die gradually, compensating for wear without removing the tool from the holder. Beveled slots allow machine-holder screws to take over adjustment when the die is mounted in automated equipment.

Upgrade from Fixed Carbon-Steel Dies

This adjustable HSS die replaces fixed-size carbon-steel rounds when thread dimensions must be trimmed to tolerance or when longer service intervals are required. The jump is worth it for shops that cut 1/2"-80 threads repeatedly and need consistent pitch diameter control. It is not suited for buyers who need larger diameters, different thread pitches, or non-round die geometries.

Highlights

  • High-speed steel construction extends wear life during threading operations
  • Adjustable fine-pitch screw allows precise thread fit control
  • Dual chamfer design supports both standard and shoulder-close threading
  • Round die geometry fits standard machine holders for secure use
  • California Proposition 65 warning applies for cancer and reproductive harm risks

Specifications

BrandDRILL AMERICA

Questions about this item

How much power does the die draw when cutting threads all day?

It is a hand-operated cutting tool with no motor, so it draws no electrical power during use.

What holder or handle must I already own to turn this 1" OD die?

A standard 1" round die stock or a machine holder with adjusting screws that accepts the bevelled slot.

Will this 1/2"-80 die work on older taps I already have?

Yes, it cuts standard 1/2"-80 threads, so it matches existing taps of the same size and pitch.

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