Sunday 24 December 2017

The spindle of carpenters and quick release vice have-
A. saw tooth threads.      
B. trapezoidal thread
C. square threads 
D. Acme threads

Name the form of thread, it has vertical flank and the other at
45° inclind.
A saw tooth thread B. buttress thread
C. trapezoidal thread       D. Acme thread

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