Threads for transmitting power in one direction - Metrology & Quality Control

Q.  Which type of threads are used to transmit power in one direction?
- Published on 07 Aug 15

a. Square threads
b. Buttress threads
c. Both a. and b.
d. None of the above

ANSWER: Buttress threads

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    Discussion

  • Sravanthi   -Posted on 26 Oct 15
    - Buttress thread is also known as breech-lock thread and it refers to two different thread profiles. Lead screw and hydraulic sealing threads are the two thread profiles.

    - In Buttress threads, one side of threaded face is perpendicular to the screw axis and the other face is slanted at 45°

    - Buttress threads have high power due to combined strength of square and V thread.

    - These threads have low friction and they are used to handle high axial thrust in one direction.

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