34. ————— nuts are used to protect the bolt ends, threads from damages and they also act
as protectors for safe working.
(കു Knurled-nuts (B) Cap-nuts
(C) Wing-nuts ) യ Self locking-nuts
353, ب is used to measure the effective diameter of screw threads.
(ക) Screw pitch gauge (छ) Screw thread plug gauge
(C) Screw thread caliper gauge (D) ணை thread micrometer
36. The most commonly used rivet for structural work :
(....
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