Free images results:
 

Bolt pictures, stock photos and images

 
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Bolt Stock Photography
Author: Ichtor
Bolt 03 Stock Images
Author: Zevark
Bolt 06 Royalty Free Stock Photos
Author: Zevark
Bolt 05 Stock Photography
Author: Zevark
S wrench Stock Images
Author: Alangh
Hex Nuts Royalty Free Stock Image
Author: Tootles
Screw Stock Images
Author: Pdiaz
Decay Royalty Free Stock Images
Author: Alptraum
Chain Royalty Free Stock Photos
Author: Mhd
 
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Also, here are some commercial RF-licensed images that match your search criteria:  
Bolt life Royalty Free Stock Images
Author: Wizzard