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Silver steel round threading die with knurled edge and adjustment slot

Drill America

Drill America DWTSR112-3448 3/4"-48 HSS Round Adjustable Die

SKU CH-75CM-EBCZQ

High-speed steel adjustable die cuts 3/4"-48 threads with wear-resistant performance and dual chamfers for shoulder work

  • High-speed steel construction extends wear life during threading
  • Adjustable fine-pitch screw allows precise thread fit control
  • Chamfered both sides for starting and shoulder threading
  • Round die design suits 3/4"-48 thread specification
  • Complies with California Proposition 65 chemical disclosure requirements

Drill America 3/4"-48 HSS Adjustable Die

This Drill America DWTSR112-3448 is a high-speed steel round adjustable die cut for a 3/4"-48 thread. It is intended for machinists and maintenance technicians who need to cut or repair external threads on rods, bolts or pipe. The tool is supplied new and carries California Proposition 65 notices for chemicals known to cause cancer and reproductive harm.

Installation notes and common issues

The die features chamfers on both faces: a 2 to 3 thread chamfer on one side for starting threads and a 1 to 1-1/2 thread chamfer on the other for threading close to a shoulder. Adjustment is made via a fine-pitch screw that spreads the die halves or lets them spring together; the slot is beveled so the screw can be removed when the die is used in a machine holder. Mis-alignment during start-up and over-tightening the adjusting screw are the typical causes of oversize or rough threads.

Behaviour under sustained use

High-speed steel construction provides improved wear life compared with carbon steel equivalents, allowing the cutting edges to stay sharp during extended threading operations. The adjustable design lets the operator compensate for wear by opening the die slightly, maintaining thread accuracy over long production runs. Heat build-up during continuous cutting can still reduce tool life if cutting fluid is not used.

Highlights

  • High-speed steel construction extends wear life during threading
  • Adjustable fine-pitch screw allows precise thread fit control
  • Chamfered both sides for starting and shoulder threading
  • Round die design suits 3/4"-48 thread specification
  • Complies with California Proposition 65 chemical disclosure requirements

Specifications

BrandDRILL AMERICA

Questions about this item

How can I verify the 3/4"-48 HSS die cuts correct threads after setup?

Check that the 2 to 3 thread chamfer starts cleanly and the fine-pitch adjustment screw holds the die halves at the chosen setting while threading.

What comes with the DWTSR112-3448 die and what must I buy separately?

The box contains the 1-1/2" OD round adjustable die only; a compatible die stock or machine holder is sold separately.

Which thread size should I choose for a 3/4"-48 application?

Select the 3/4"-48 model (part 3448) to match that exact thread pitch and diameter.

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