Free images results:
 

Fastener pictures, stock photos and images

 
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Lock Stock Images
Author: Allein
Screwed Royalty Free Stock Photo
Author: Rinderart
Bolt 06 Royalty Free Stock Photos
Author: Zevark
Bolt 05 Stock Photography
Author: Zevark
Bolt 03 Stock Images
Author: Zevark
 
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Also, here are some commercial RF-licensed images that match your search criteria:  
Fastener Royalty Free Stock Photography
Author: Laozhang