 
			 
			MCQOPTIONS
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				| 1. | _______________________ is a nut in which a collar is provided at the upper end of the hexagonal nut and a fiber ring is fitted inside it. | 
| A. | Simmond’s locknut | 
| B. | Penn nut | 
| C. | Castle nut | 
| D. | Sawn nut or wiles nut | 
| Answer» B. Penn nut | |