Bolts Top View Images, Stock Photos & Vectors | Shutterstock
Screw Top Clip Art - Royalty Free - GoGraph
Metal Imbus Screw, Bolt With A Cylindrical Head. Shiny Cap Twisted In Surface Isolated On White Background. Macro Chrome Top View Stock Vector - Illustration of construct, closeup: 171256191
File:Phillips screw head 2.png - Wikimedia Commons