buttress thread


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buttress thread

[′bə·trəs ‚thred]
(design engineering)
A screw thread whose forward face is perpendicular to the screw axis and whose back face is at an angle to the axis, so that the thread is both efficient in transmitting power and strong.
References in periodicals archive ?
The new system has replaced o-rings and NPT threads with a buttress thread and a new sealing surface, providing the end user with a leak-free, cleaner and faster connection.
With their asymmetrical cross-section, buttress threads are best to withstand the shock loads, vibration, and high stresses in rock crushers.