Which
of the following is trapezoidal thread?
निम्नलिखित में से कौन सा समलम्बाकार चूड़ी है?
Acme
Square
Buttress
All
are correct
Acme
Trapezoidal thread is similar to acme thread except the thread angle.
20
For
trapezoidal thread = 300
For
acme thread = 290
Hence,
the correct option is (A).
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