Jim, Have a look at metric flat head counter sunk. The heads are about the same as the b.s. ones. (8.0mm) Unified (American) ones are what you will have tried. 
 
I  support Ben's sentiments in thanking Michael R. for his efforts in producing these important fasteners. 
 
Next thing,  all of us riveted carrier guys (and girls) will be scrambling to find BSF nuts. :-)
		 
		
		
		
		
		
		
			
				__________________ 
				Bluebell 
 
Carrier Armoured O.P. No1 Mk3 W.  T84991 
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. 
Dodge WC55. 37mm Gun Motor Carriage M6 
Jeep Mb #135668 
So many questions....
			 
		
		
		
		
		
			
				  
				
					
						Last edited by Lynn Eades; 30-11-15 at 11:20.
					
					
				
			
		
		
		
	
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