Question

Identify the correct statement for the screw threads
A. A square thread of nominal diameter =30 mm and pitch =6 mm is designated as K 30 x 6.
B. Knuckle threads are used on necks of glass bottles.
C. Square threads offers less frictional resistance.
D. The angle between flacks of metric threads is 550
E. The flacks of B.S.W. thread are equally rounded at both crest and root.
Choose the correct answer from the options given below:

• A. A, B, and C only
• B. B, C, and D only
• C. C, D, and E only
• D. B, C, and E only

Answer 1

Answer: (D)

B, C, and E only

Answer 2

The correct option is (D): B, C, and E only