National Bushing & Manufacturing Corp.  
 
505 Oakwood Road, Suite 240  
Lake Zurich, IL 60047  
 
 
 
 
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Inserts are found in a variety of applications usually as part of a cast or  
are made using E52100 aircraft quality steel, which is harder/tougher and  
such as die cast aluminum or plastic.  
 
Steel, aluminum and brass are the most common materials.  They can be  
plain or with threads, knurls or grooves. Plating is also available  
 
 
Please contact us with quotation requests or questions you may have.