I think the wingnut was a 3/8dia BSF one.  It should be the same that was on the pick axe head bracket or the battery hold down bracket rods.
		 
		
		
		
		
		
		
			
				__________________ 
				Jordan Baker 
RHLI Museum, 
Otter LRC 
C15A-Wire3, 1944 
Willys MB, 1942 
10cwt Canadian trailer
			 
		
		
		
		
		
	
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