1202.4—Matchbook general requirements.
         A matchbook shall meet the following general requirements:
    
    
    
    
        
        (c) 
         No friction material shall be located on the inside of the cover where possible contact with the matchheads may occur during ordinary use.
    
    
    
    
    
        
        (g) 
         No part of a staple or other assembly device for securing the cover and combs shall be within or touching the friction area.
    
    
        
        (h) 
         A staple used as an assembly device for securing the cover and combs shall be fully clinched so that the ends are flattened or turned into the cover.