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Silver metal threading tap with fluted shaft and square drive end

Drill America

Drill America DWTST1-48P 1"-48 HSS plug tap

SKU CH-7G02-FZARP

1"-48 HSS plug tap cuts threads in through holes for hand or machine use

  • Versatile for hand or powered tapping
  • Plug style suits through-hole threading
  • High-speed steel construction withstands heavy use
  • 1"-48 thread size fits standard applications
  • California Prop 65 warning applies

1"-48 HSS Plug Tap

This Drill America DWTST1-48P is a high-speed steel plug tap designed for cutting internal threads in through holes. It suits machinists and technicians performing general machine tapping or CNC operations across a wide range of materials. The plug style ensures reliable thread starting in thru-hole applications.

Not for blind holes or thread repair

This tap is not suited for blind holes where threads must reach the bottom, as the plug chamfer cannot cut full threads to the base. Buyers needing to generate threads to the bottom of a hole should select a bottoming tap instead. It also does not address thread restoration tasks.

No accessories included

The product is sold as a single plug tap without additional tooling or lubricants. Tap sets containing taper, plug and bottoming styles are available separately for complete threading workflows. Users must supply their own cutting fluid and tap handles for operation.

Highlights

  • Versatile for hand or powered tapping
  • Plug style suits through-hole threading
  • High-speed steel construction withstands heavy use
  • 1"-48 thread size fits standard applications
  • California Prop 65 warning applies

Specifications

BrandDRILL AMERICA

Questions about this item

What size tap wrench fits the 1"-48 plug tap?

A tap wrench that accepts a 1-inch shank will hold the 1"-48 plug tap securely for hand threading.

Can the 1"-48 plug tap cut threads in an existing 1"-48 hole?

The plug style is designed for through holes, so it will chase or clean existing 1"-48 threads but will not start new threads in a blind hole.

How do I verify the 1"-48 plug tap produced correct threads?

Check the new threads with a 1"-48 thread gauge; the gauge should engage smoothly for the full depth of the tapped hole.

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