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Silver round adjustable die with fine pitch adjustment screw

Drill America

Drill America DWTSR3-1388 HSS Round Adjustable Die

SKU CH-H956-CT54Y

High-speed steel round adjustable die cuts 1-3/8"-8 threads with chamfered faces for shoulder work and a fine-pitch screw for precise adjustment

  • HSS construction extends wear life for repeated threading tasks
  • Adjustable fine-pitch screw allows precise thread fit control
  • Dual chamfer design supports both standard and shoulder-adjacent threading
  • 1-3/8"-8 thread size matches specific pipe and bolt requirements
  • California Proposition 65 warning discloses regulated chemical presence

High Speed Steel Adjustable Die

This High Speed Steel Round Adjustable Die is designed for threading operations where improved wear life is required. It suits maintenance and repair tasks on pipes or rods that match the 1-3/8"-8 specification. The die is chamfered on both faces to support different thread-starting needs.

Threading Limits and Wear Life

The die cuts a 1-3/8"-8 thread form using High Speed Steel for extended service compared with carbon steel alternatives. Adjustment is made by a fine pitch screw that opens or closes the die halves. California Proposition 65 warnings apply because the product contains chemicals known to cause cancer and reproductive harm.

Installation and Common Issues

One face has a 2 to 3 thread chamfer for standard threading while the other has a 1 to 1-1/2 thread chamfer for work close to a shoulder. The adjusting screw can be removed when the die is held in a machine holder that provides its own adjustment screws. Incorrect chamfer selection or over-adjustment can produce oversize or undersize threads.

Highlights

  • HSS construction extends wear life for repeated threading tasks
  • Adjustable fine-pitch screw allows precise thread fit control
  • Dual chamfer design supports both standard and shoulder-adjacent threading
  • 1-3/8"-8 thread size matches specific pipe and bolt requirements
  • California Proposition 65 warning discloses regulated chemical presence

Specifications

BrandDRILL AMERICA

Questions about this item

Should I choose the 1-3/8"-8x3" OD HSS Round Adjustable Die for my threading needs?

This die cuts 1-3/8"-8 threads with a 3" outside diameter. High-speed steel gives longer wear life than carbon steel. Chamfered both sides: 2-3 threads for starting, 1-1.5 threads for work near a shoulder.

How does the adjustable feature work once the die is in the machine?

A fine-pitch screw spreads or closes the die halves for precise fit. The slot is beveled so the screw can be removed and the machine holder's own adjusting screws take over for in-machine tweaks.

What does the California Proposition 65 warning mean for workshop use?

The die contains a chemical listed by California as a cancer and reproductive-hazard risk. Wear gloves, avoid inhaling dust when grinding, and wash hands after handling to minimise exposure.

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