An NC (National Coarse) Thread Bit Adapter (Male to Female) is a precision-machined tool joint accessory used to connect two components in a drilling string that have different or matching NC thread types. One end of the adapter has male threads, and the other has female threads.
It is typically used in rotary drilling, mining, geotechnical, and construction to adapt between different tool thread types, extend drill strings, reduce wear on more expensive tooling, and facilitate quick changeouts of bits or rods.
- Design: Threaded Connections -One end: Male NC thread and opposite end: Female NC thread. Body Geometry -Cylindrical, with external flats or wrench slots for tightening with pipe wrenches or tongs; central bore to allow for fluid, air, or wireline passage; may include shoulders or torque stops for controlled makeup torque.
- Applications: The NC thread bit adapter (male to female) is widely used in:
- Rotary Drilling -Connecting drill collars, subs, or stabilizers to the bit or other tools
- Mining and Exploration -Adapting between different sizes or generations of drill rods and downhole tools
- Geotechnical & Environmental Drilling -Adapting drill bits, casing, and rods for soil and rock sampling
- Water Well Drilling -Connecting drive chucks, hammer bits, or casing tools
- Directional Drilling & HDD -Allowing bit changeouts while maintaining compatibility with drive rods
- Materials: Body is made of high-strength alloy steel for high-tensile strength and toughness under torque and impact. Heat-treated.
- Configuration:Female thread: 1″ NC; Male Thread: R32; Overall length 6″ or 8″; Optional heat-treat