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L.H. DOTTIE

L.H. DOTTIE HPD400 4'' Die (3-1/2'' Conduit)

SKU CH-X3WF-7A6F8

4'' conduit die for threading 3-1/2'' pipe, built for professional installation work

  • 4'' die cuts 3-1/2'' conduit precisely
  • DOTTIE brand trusted by trade professionals
  • New condition ensures full service life
  • Model HPD400 designed for power tool use
  • 400 series built for heavy-duty applications

L.H. Dottie 4-Inch Die

This L.H. Dottie die is a threading tool designed for 3-1/2-inch conduit work. It cuts external threads on pipe or conduit to accept standard fittings. The hardened steel construction resists wear during repeated use on job sites. Electricians and mechanical contractors use it to prepare conduit runs for installation.

Suited for conduit threading tasks

The die suits professionals who cut threads on 3-1/2-inch rigid or IMC conduit. It is not intended for smaller conduit sizes or for internal pipe tapping. Buyers who need a complete threader set with handles or ratchets should look at dedicated threading kits. Users requiring dies for other diameters will need separate tooling.

Single die supplied in packaging

The package contains the 4-inch die only; no handle, ratchet, or case is included. Operators must provide a compatible die stock or threader drive to turn the die. No cutting oil or thread sealant is bundled with the tool. The die arrives ready for immediate use with the user's existing threading equipment.

Highlights

  • 4'' die cuts 3-1/2'' conduit precisely
  • DOTTIE brand trusted by trade professionals
  • New condition ensures full service life
  • Model HPD400 designed for power tool use
  • 400 series built for heavy-duty applications

Specifications

BrandDOTTIE

Questions about this item

What conduit size does the HPD400 4'' die thread?

The HPD400 die is sized for 3-1/2'' conduit, cutting threads that match that trade diameter.

Will this die fit the ratchet or handle I already use for 1'' through 2'' conduit dies?

The HPD400 is a 4'' die body, so it requires a 4'' ratchet, handle or powered driver made for that size; smaller handles will not engage it.

How can I confirm the threads I cut with the HPD400 are correct?

Thread a 3-1/2'' conduit coupling onto the freshly cut pipe — it should start easily and seat fully without binding or cross-threading.

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