The designation M 33 x 2 of a bolt means___________________?

The designation M 33 x 2 of a bolt means___________________?

A. metric threads of 33 nos in 2 cm.
B. metric threads with cross-section of 33 mm
C. metric threads of 33 mm outside diameter and 2 mm pitch
D. bolt of 33 mm nominal diameter having 2 threads per cm
E. none of the above

Jam nut is a locking device in which _____________________?

Jam nut is a locking device in which _____________________?

A. one smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
B. a slot is cut partly in middle of nut and then slot reduced by tightening a screw
C. a hard fiber or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip
D. through slots are made at top and a cotter- is passed through these and a hole in the bolt, and cotter spitted and bent in reverse direction at other end
E. none of the above

Turn buckle has____________________?

Turn buckle has____________________?

A. right hand threads on bout ends
B. left hand threads on both ends
C. left hand threads on one end and right hand threads on other end
D. no threads
E. threads in middle portion

Elastic nut is a locking device in which__________________?

Elastic nut is a locking device in which__________________?

A. one small nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
B. a slot is cut partly in middle of nut and then slot reduced by tightening a screw
C. hard fiber or nylon cotter is recessed in the nut and becomes threaded as the nut is stewed on the bolt causing a tight grip
D. through slots are made at top and a cotter- is passed through these and a hole in the bolt, and cotter splitted and bent in reverse direction at other end
E. none of the above