Down The Hole (DTH) Subs

Our high strength DTH Subs go the distance. API, BECO, Cubex, DIBH and other threads.

Down The Hole (DTH) Subs for Drilling

Always the right DTH Tools for the job.

Our focus at Harlsan is on exceptional product design and material quality. This makes for very tough and robust DTH subs that you can rely on to keep you drilling.

Designed and manufactured right here in Australia, our Down The Hole Subs life is further boosted with precision thread manufacturing and high quality high tensile steel construction.


Australia’s Toughest DTH Products


Our DTH range of products is assigned a unique product ID, allowing you to track your cost per metre drilled.

At Harlsan, it is our mission to continuously improve our products to continuously improve your ROI.


DTH Specifications

Precision Cut Threads

The most common thread types we support:

  1. API Regular
  2. API Internal Flush (IF)
  3. API Full Hole
  4. DIBH
  5. Beco
  6. Cubex

Other thread types available upon request.

Full Range of DTH Subs

Saver, Dig-out, Bit, Adapter, and more.

Customised Options

Hard-facing, spanner flats & wrench slots as required.

Keep Track of Your Cost

Our range of DTH products comes with unique product IDs to let you keep track of your cost per meters drilled.

Large Stock Range

Harlsan have a large range of subs in stock for immediate dispatch.

Australian Made Toughness

We use only the best quality materials to keep you drilling.

Down The Hole (DTH) Subs & Products Ordering Information


From Africa through to Asia, Eastern Europe through to the UK, and Canada through to South America. We can supply you with robust and long-lasting DTH subs.

For pricing, immediate supply or customised orders call us on +61 8 9021 1288.

Get your engineered drilling components and consumable items on time, on budget and on track with Harlsan’s manufacturing services. Call us now or request a quote.