Crossover subs have two main applications.They can be used to cross over from one connection size to another, or as a disposable part used to prolong the life of more expensive drill stem components.

Crossover subs are available in three forms. Connections are a box x box, box x pin, and pin x pin configuration.The threaded connections are also protected by a durable phosphate surface coating that helps reduce galling during the initial make-up.

All of our crossover subs are manufactured to conform to API specifications.