R17 Male - Female Thread Adapter for H22 Drill Rods

One end connects to an H22 hexagonal drill rod, while the other connects to a small-diameter drill bit.
This configuration enables a quick - connect between the drill rod and the bit, ensures reliable power transmission, and facilitates convenient rod-extension operations during rock drilling.

The R17 Male - Female Thread Adapter is the essential " bridge " component. Whether you are scaling up your operation or simply replacing a worn-out part, having a precision-engineered adapter ensures your drill string operates as a single, powerful unit.

Structure

External Thread End : R17 External Thread (Male)
Connects to small drill bits ( Flat / Cross / Ball - tooth ) featuring an R17 internal thread.
Internal Thread End : R17 Internal Thread ( Female )
Connects to the R17 external thread end of an H22 drill rod.

Compatibility with H22 Drill Rods

H22 Drill Rod : Refers to a 22mm hexagonal drill rod, which is the most commonly used rod type for light-duty rock drilling.
The shank end of the drill rod typically features an R17 external thread.
Therefore, an R17 internally threaded coupling is required to establish the connection.
The complete connection assembly consists of : H22 Drill Rod ( R17 external thread ) ← → R17 Internal / External Coupling ← → Small Drill Bit ( R17 internal thread ).

Premium Material Construction : Crafted from high-strength alloy steel (such as 42CrMo), our adapters are built to withstand the high-frequency impact of top-hammer drilling.

Advanced Heat Treatment : Every unit undergoes a specialized carburization process, increasing surface hardness and fatigue resistance to ensure a longer service life in abrasive rock conditions.

CNC Precision Machining : Our threads are machined with strict tolerances to guarantee a tight, secure fit that minimizes energy loss and prevents accidental loosening.

Dual - Gender Versatility : Available in Male - to - Female ( Pin to Box ) configurations to adapt your H22 system to various R17 rope threads.

Applicable Scenarios

Hand - held Rock Drills, Air - leg Rock Drills.
Small - diameter, Shallow - hole Drilling : Anchor Bolt Holes , Blast Holes , Quarrying , Slope Support.