Tapered thread configuration with improved durability

摘要: Underground drilling operation often requires connecting a drill tool (e.g., bit, backreamer, etc.) to string. It is desirable connect the tools string in manner that facilitates quick and easy assembly disassembly. Low torque coupling, commonly referred as “torque-less” connection, can provide such functionality. The useful life strength of connections be improved upon. present disclosure provides low coupling with durability.